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Varghese R, Behera S, Behera MD. Tropical ocean teleconnections with gross primary productivity of monsoon-Asia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 938:173337. [PMID: 38797406 DOI: 10.1016/j.scitotenv.2024.173337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 05/07/2024] [Accepted: 05/16/2024] [Indexed: 05/29/2024]
Abstract
The intricate oceanic climate interactions with terrestrial primary production of Asian ecosystems exert crucial social-economical-environmental repercussions. Yet, a holistic understanding of tropical sea surface temperature (SST) anomalies associated with the gross primary productivity (GPP) variations of monsoon-Asia remains constrained. This study provides a statistical framework demonstrating how SST perturbations in the tropics influence GPP fluctuations in monsoon-Asia by modulating hydrothermal conditions of different climate system components. Observation evidence explicitly illustrated the characteristic anomalous SST signatures of positive and negative GPP anomalies in South and Southeast Asia during June-August. The SST anomalies of the central-eastern tropical Pacific showed a robust negative impact on the GPP variability of South-Asia. The GPP alterations in maritime-Southeast-Asia exhibited strong connections with SST anomalies of the western Pacific (positive) and eastern equatorial Pacific (negative). The oceanic signals in the GPP variability of South-Asia and maritime-Southeast-Asia mirrored canonical El Niño and La Niña patterns. The detected SST-GPP link is feasible through large-scale atmospheric circulation variability and the consequent regional modulation of heat and moisture fluxes. The anomalous strengthening (weakening) of Walker cell enhances (reduces) water availability to plants for photosynthesis during the La Niña (El Niño) phase of the ENSO cycle and thus elevates (lowers) GPP in South-Asia and Maritime-southeast-Asia. In contrast, the enhanced GPP anomaly in mainland-Southeast-Asia depicts signs of canonical La Niña and Indian Ocean subtropical dipole (IOSD) teleconnections. The positive impact of IOSD was through the modulation of the Mascarene High and the consequent impact on the monsoon. Meanwhile, decreased GPP bears the imprint of El Niño Modoki and warm tropical Indian Ocean SSTs. The atmospheric teleconnections demonstrated the delayed impact of El Niño Modoki on GPP variability through the Indian Ocean capacitor effect. Our findings could be instrumental in forecasting the probable effects on vegetation growth in monsoon-Asia associated with high-frequency tropical oceanic changes.
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Affiliation(s)
- Roma Varghese
- Centre for Ocean, River, Atmosphere and Land Sciences, Indian Institute of Technology Kharagpur, India.
| | - Swadhin Behera
- Applications Laboratory, Research Institute for Value Added Information Generation, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan.
| | - Mukunda Dev Behera
- Centre for Ocean, River, Atmosphere and Land Sciences, Indian Institute of Technology Kharagpur, India.
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Liu Q, Wang S, Wang W, Chen J, Zhu L. Polybrominated diphenyl ethers and polychlorinated biphenyls induced rice "diabetes" by disturbing the transport and decomposition of soluble sugars. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024:124523. [PMID: 38986763 DOI: 10.1016/j.envpol.2024.124523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 06/15/2024] [Accepted: 07/08/2024] [Indexed: 07/12/2024]
Abstract
Halogenated flame retardants in farmlands were observed to inhibit the growth of exposed crops. This study aimed to elucidate the mechanism of inhibition on rice by employing four representative polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs). The exposure to these contaminants at 200 nM led to a decrease of 0.63-0.95 fold in rice below-ground biomass and 0.49-0.66 fold in yield, and a corresponding 4%-10% increase in soluble sugars in leaves. PBDEs and PCBs were found to significantly disrupt the synthesis, decomposition, and transport of sugars in leaves, the three pivotal determinants of crop growth. Notably, these compounds promoted a 1.41- to 7.60-fold upregulation of the triose phosphate translocator, significantly enhancing soluble sugar synthesis. Conversely, a 0.45-0.97 fold downregulation was observed for sucrose transporters, thus impeding the leaf-to-shoot efflux of soluble sugars. Furthermore, PBDEs and PCBs were favorably bound to fructose-1,6-bisphosphate aldolase (FBA), inducing its substrate-specific dysfunction in fructose-1,6-diphosphate decomposition (3%-14%). Overall, PBDE and PCB exposure promoted a notable intracellular accumulation of soluble sugars in rice leaves, a typical symptom of plant diabetes, since the intensified synthesis of soluble sugars in leaves and the repressed decomposition and transportation of soluble sugars to other storage organs, thus impeding crop growth. This study provided an insightful understanding of the toxic effects and molecular mechanisms of halogenated flame retardants, highlighting their role in abnormal sugar accumulation and growth inhibition in crops and offering vital information for the risk assessment and administration of these compounds to guarantee the safety of agricultural products.
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Affiliation(s)
- Qian Liu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China
| | - Shuyuan Wang
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China
| | - Wei Wang
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China; Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Jie Chen
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China; Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Lizhong Zhu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou, Zhejiang, 310058, China; Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, Zhejiang University, Hangzhou, Zhejiang, 310058, China.
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Elsisi M, Elshiekh M, Sabry N, Aziz M, Attia K, Islam F, Chen J, Abdelrahman M. The genetic orchestra of salicylic acid in plant resilience to climate change induced abiotic stress: critical review. STRESS BIOLOGY 2024; 4:31. [PMID: 38880851 PMCID: PMC11180647 DOI: 10.1007/s44154-024-00160-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 03/12/2024] [Indexed: 06/18/2024]
Abstract
Climate change, driven by human activities and natural processes, has led to critical alterations in varying patterns during cropping seasons and is a vital threat to global food security. The climate change impose several abiotic stresses on crop production systems. These abiotic stresses include extreme temperatures, drought, and salinity, which expose agricultural fields to more vulnerable conditions and lead to substantial crop yield and quality losses. Plant hormones, especially salicylic acid (SA), has crucial roles for plant resiliency under unfavorable environments. This review explores the genetics and molecular mechanisms underlying SA's role in mitigating abiotic stress-induced damage in plants. It also explores the SA biosynthesis pathways, and highlights the regulation of their products under several abiotic stresses. Various roles and possible modes of action of SA in mitigating abiotic stresses are discussed, along with unraveling the genetic mechanisms and genes involved in responses under stress conditions. Additionally, this review investigates molecular pathways and mechanisms through which SA exerts its protective effects, such as redox signaling, cross-talks with other plant hormones, and mitogen-activated protein kinase pathways. Moreover, the review discusses potentials of using genetic engineering approaches, such as CRISPR technology, for deciphering the roles of SA in enhancing plant resilience to climate change related abiotic stresses. This comprehensive analysis bridges the gap between genetics of SA role in response to climate change related stressors. Overall goal is to highlight SA's significance in safeguarding plants and by offering insights of SA hormone for sustainable agriculture under challenging environmental conditions.
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Affiliation(s)
- Mohamed Elsisi
- School of Biotechnology, Nile University, Giza, 12588, Egypt
| | - Moaz Elshiekh
- School of Biotechnology, Nile University, Giza, 12588, Egypt
| | - Nourine Sabry
- School of Biotechnology, Nile University, Giza, 12588, Egypt
| | - Mark Aziz
- School of Biotechnology, Nile University, Giza, 12588, Egypt
| | - Kotb Attia
- College of Science, King Saud University, P.O. Box 2455, 11451, Riyadh, Saudi Arabia
| | - Faisal Islam
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China.
| | - Jian Chen
- International Genome Center, Jiangsu University, Zhenjiang, 212013, China.
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Choudhary A, Senthil-Kumar M. Drought: A context-dependent damper and aggravator of plant diseases. PLANT, CELL & ENVIRONMENT 2024; 47:2109-2126. [PMID: 38409868 DOI: 10.1111/pce.14863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 02/04/2024] [Accepted: 02/10/2024] [Indexed: 02/28/2024]
Abstract
Drought dynamically influences the interactions between plants and pathogens, thereby affecting disease outbreaks. Understanding the intricate mechanistic aspects of the multiscale interactions among plants, pathogens, and the environment-known as the disease triangle-is paramount for enhancing the climate resilience of crop plants. In this review, we systematically compile and comprehensively analyse current knowledge on the influence of drought on the severity of plant diseases. We emphasise that studying these stresses in isolation is not sufficient to predict how plants respond to combined stress from both drought and pathogens. The impact of drought and pathogens on plants is complex and multifaceted, encompassing the activation of antagonistic signalling cascades in response to stress factors. The nature, intensity, and temporality of drought and pathogen stress occurrence significantly influence the outcome of diseases. We delineate the drought-sensitive nodes of plant immunity and highlight the emerging points of crosstalk between drought and defence signalling under combined stress. The limited mechanistic understanding of these interactions is acknowledged as a key research gap in this area. The information synthesised herein will be crucial for crafting strategies for the accurate prediction and mitigation of future crop disease risks, particularly in the context of a changing climate.
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Khan AL. Silicon: A valuable soil element for improving plant growth and CO 2 sequestration. J Adv Res 2024:S2090-1232(24)00217-0. [PMID: 38806098 DOI: 10.1016/j.jare.2024.05.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 05/21/2024] [Accepted: 05/23/2024] [Indexed: 05/30/2024] Open
Abstract
BACKGROUND Silicon (Si), the second most abundant and quasi-essential soil element, is locked as a recalcitrant silicate mineral in the Earth's crust. The physical abundance of silicates can play an essential role in increasing plant productivity. Plants store Si as biogenic silica (phytoliths), which is mobilized through a chemical weathering process in the soil. AIM OF REVIEW Although Si is a critical element for plant growth, there is still a considerable need to understand its dissolution, uptake, and translocation in agroecosystems. Here, we show recent progress in understanding the interactome of Si, CO2, the microbiome, and soil chemistry, which can sustainably govern silicate dissolution and cycling in agriculture. KEY SCIENTIFIC CONCEPTS OF THIS REVIEW Si cycling is directly related to carbon cycling, and the resulting climate stability can be enhanced by negative feedback between atmospheric CO2 and the silicate uptake process. Improved Si mobilization in the rhizosphere by the presence of reactive elements (for example, Ca, Na, Al, Zn, and Fe) and Si uptake through genetic transporters in plants are crucial to achieving the dual objectives of (i) enhancing crop productivity and (ii) abiotic stress tolerance. Furthermore, the microbiome is a symbiotic partner of plants. Bacterial and fungal microbiomes can solubilize silicate minerals through intriguingly complex bioweathering mechanisms by producing beneficial metabolites and enzymes. However, the interaction of Si with CO2 and the microbiome's function in mobilization have been understudied. This review shows that enhancing our understanding of Si, CO2, the microbiome, and soil chemistry can help in sustainable crop production during climatic stress events.
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Affiliation(s)
- Abdul Latif Khan
- Department of Engineering Technology, University of Houston, Sugar Land, TX, USA; Department of Biology and Biochemistry, University of Houston, Houston TX, USA.
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Li B, Wang R, Chen JM. Responses of phenology to preseason drought and soil temperature for different land cover types on the Mongolian Plateau. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171895. [PMID: 38531448 DOI: 10.1016/j.scitotenv.2024.171895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/21/2024] [Accepted: 03/20/2024] [Indexed: 03/28/2024]
Abstract
Drought and heat caused major disturbance in nature by interfering with plant phenology, and can also alter the vulnerability and resilience of terrestrial ecosystems. Existing research on the Mongolian Plateau has primarily focused on studying the response of the start (SOS) and end (EOS) of the growing season to drought and heat variations. However, there is still a lack of comprehensive understanding regarding the coupled effects of drought and heat on phenology across different land cover types. In this study, we retrieved SOS and EOS based on 34-year (1982-2015) normalized difference vegetation index (NDVI) dataset from Global Inventory Modeling and Mapping Studies (GIMMS). Results showed that grasslands and the Gobi-Desert show rapid advancement in SOS, and forests presented the slowest advancement in SOS, but SOS in croplands were delayed. EOS across four land cover types advanced, with the Gobi-Desert showed the highest rate of advancement and forests the lowest. Using the Palmer Drought Severity Index (PDSI) and soil temperature as the indicators of drought and thermal conditions, the responses of SOS and EOS to these two climate variables were evaluated. The advanced SOS driven by lower drought severity was detected in forests, grasslands, croplands and the Gobi-Desert. The dominant response of EOS to drought severity was positive in croplands, grasslands and forests, except for the Gobi-Desert, where drought severity had negative effects on EOS. Compared with the daily average soil temperature (STmean), the daily maximum soil temperature (STmax, daytime), and the daily minimum soil temperature (STmin, nighttime), the daily diurnal soil temperature range (DSTR, where DSTR = STmax - STmin) between night and day were the most suitable indicators for assessing the response of SOS and EOS to soil temperature. Strong negative correlation between SOS and the preseason DSTR was pronounced in all land cover types on the Mongolian Plateau. However, EOS was negatively correlated with the preseason DSTR only in the Gobi-Desert. Last but not least, normalized sensitivity assessments reveal that the negative impacts of DSTR on SOS and EOS were the main controlling factors on the Mongolian Plateau phenology, followed by the couple negative effects of drought severity and DSTR.
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Affiliation(s)
- Bing Li
- School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Key Laboratory of Humid Subtropical Eco-Geographical Process, Ministry of Education, Fuzhou, Fujian Province, China
| | - Rong Wang
- School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Key Laboratory of Humid Subtropical Eco-Geographical Process, Ministry of Education, Fuzhou, Fujian Province, China.
| | - Jing M Chen
- School of Geographical Sciences, Fujian Normal University, Fuzhou 350117, China; Key Laboratory of Humid Subtropical Eco-Geographical Process, Ministry of Education, Fuzhou, Fujian Province, China.
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Wang Y, Liu H, Bai L, Liu R, Jiang H, Tan J, Chen J. Overexpression of OsNAR2.1 by OsNAR2.1 promoter increases drought resistance by increasing the expression of OsPLDα1 in rice. BMC PLANT BIOLOGY 2024; 24:321. [PMID: 38654179 PMCID: PMC11040742 DOI: 10.1186/s12870-024-05012-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 04/11/2024] [Indexed: 04/25/2024]
Abstract
BACKGROUND pOsNAR2.1:OsNAR2.1 expression could significantly increase nitrogen uptake efficiency and grain yield of rice. RESULT This study reported the effects of overexpression of OsNAR2.1 by OsNAR2.1 promoter on physiological and agronomic traits associated with drought tolerance. In comparison to the wild-type (WT), the pOsNAR2.1:OsNAR2.1 transgenic lines exhibited a significant improvement in survival rate when subjected to drought stress and then irrigation. Under limited water supply conditions, compared with WT, the photosynthesis and water use efficiency (WUE) of transgenic lines were increased by 39.2% and 28.8%, respectively. Finally, the transgenic lines had 25.5% and 66.4% higher grain yield than the WT under full watering and limited water supply conditions, respectively. Compared with the WT, the agronomic nitrogen use efficiency (NUE) of transgenic lines increased by 25.5% and 66.4% under full watering and limited water supply conditions, and the N recovery efficiency of transgenic lines increased by 29.3% and 50.2%, respectively. The interaction between OsNAR2.1 protein and OsPLDα1 protein was verified by yeast hybrids. After drought treatment, PLDα activity on the plasma membrane of the transgenic line increased 85.0% compared with WT. CONCLUSION These results indicated that pOsNAR2.1:OsNAR2.1 expression could improve the drought resistance of rice by increasing nitrogen uptake and regulating the expression of OsPLDα1.
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Affiliation(s)
- Yamei Wang
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Hongyan Liu
- School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya, Hainan, 572025, China
| | - Lu Bai
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Ruifang Liu
- The High School Affiliated to Renmin, University of China, Shenzhen, Guangdong, 518119, China
| | - Hongzhen Jiang
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Jinfang Tan
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China
| | - Jingguang Chen
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong, 518107, China.
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Bleša D, Matušinský P, Baláž M, Nesvadba Z, Zavřelová M. Endophyte Inoculation and Elevated Potassium Supply on Productivity, Growth and Physiological Parameters of Spring Barley ( Hordeum vulgare L.) Genotypes over Contrasting Seasons. PLANTS (BASEL, SWITZERLAND) 2024; 13:1168. [PMID: 38674576 PMCID: PMC11054443 DOI: 10.3390/plants13081168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 04/15/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024]
Abstract
In recent years, recurrent droughts have significantly affected spring barley production, reducing the quantity and quality of grain. This study aims to identify genotype-specific traits and the drought resilience of six different Hordeum vulgare L. (spring barley) genotypes, while also examining the potential of potassium application and fungal endophyte Serendipita indica inoculation to mitigate the negative effects of dry periods during the growing season. Field experiments were conducted over a three-year period from 2020 to 2022, measuring physiological, growth, and yield parameters. To get insight into the physiological state of the plants, we measured the soluble sugars content and the ratio of stable carbon isotopes in the flag leaf tissue, which reflects conditions during its formation. The dominant factors that influenced the measured parameters were the genotypes and seasons, as well as their interaction, rather than other experimental factors. The results showed that the Spitfire and Accordine varieties were the best performing in both the 2020 and 2021 seasons, as indicated by their yield. However, in the drier 2022 season, the yield of these two varieties decreased significantly (to 55% for Spitfire and to 69% for Accordine of their yield in 2021), while for the arid-region genotypes, it remained at the same level as the previous year. This study sheds light on the potential of various genotypes to withstand periods of drought and the effectiveness of using potassium application and S. indica inoculation as mitigation approaches.
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Affiliation(s)
- Dominik Bleša
- Agrotest Fyto, Ltd., 76701 Kroměříž, Czech Republic
- Department of Experimental Biology, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic;
| | - Pavel Matušinský
- Agrotest Fyto, Ltd., 76701 Kroměříž, Czech Republic
- Department of Botany, Faculty of Science, Palacký University in Olomouc, 78371 Olomouc, Czech Republic
| | - Milan Baláž
- Department of Experimental Biology, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic;
| | - Zdeněk Nesvadba
- Gene Bank, Crop Research Institute, Drnovská 507, 16106 Praha 6 – Ruzyně, Czech Republic;
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Sharmin RA, Karikari B, Bhuiyan MR, Kong K, Yu Z, Zhang C, Zhao T. Comparative Morpho-Physiological, Biochemical, and Gene Expressional Analyses Uncover Mechanisms of Waterlogging Tolerance in Two Soybean Introgression Lines. PLANTS (BASEL, SWITZERLAND) 2024; 13:1011. [PMID: 38611540 PMCID: PMC11013326 DOI: 10.3390/plants13071011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/31/2024] [Accepted: 03/31/2024] [Indexed: 04/14/2024]
Abstract
Waterlogging is one of the key abiotic factors that severely impedes the growth and productivity of soybeans on a global scale. To develop soybean cultivars that are tolerant to waterlogging, it is a prerequisite to unravel the mechanisms governing soybean responses to waterlogging. Hence, we explored the morphological, physiological, biochemical, and transcriptional changes in two contrasting soybean introgression lines, A192 (waterlogging tolerant, WT) and A186 (waterlogging sensitive, WS), under waterlogging. In comparison to the WT line, waterlogging drastically decreased the root length (RL), shoot length (ShL), root fresh weight (RFW), shoot fresh weight (ShFW), root dry weight (RDW), and shoot dry weight (ShDW) of the WS line. Similarly, waterlogging inhibited soybean plant growth by suppressing the plant's photosynthetic capacity, enhancing oxidative damage from reactive oxygen species, and decreasing the chlorophyll content in the WS line but not in the WT line. To counteract the oxidative damage and lipid peroxidation, the WT line exhibited increased activity of antioxidant enzymes such as peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT), as well as higher levels of proline content than the WS line. In addition, the expression of antioxidant enzyme genes (POD1, POD2, FeSOD, Cu/ZnSOD, CAT1, and CAT2) and ethylene-related genes (such as ACO1, ACO2, ACS1, and ACS2) were found to be up-regulated in WT line under waterlogging stress conditions. In contrast, these genes showed a down-regulation in their expression levels in the stressed WS line. The integration of morpho-physiological, biochemical, and gene expression analyses provide a comprehensive understanding of the responses of WT and WS lines to waterlogging conditions. These findings would be beneficial for the future development of soybean cultivars that can withstand waterlogging.
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Affiliation(s)
- Ripa Akter Sharmin
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture, Zhongshan Biological Breeding Laboratory (ZSBBL), National Innovation Platform for Soybean Breeding and Industry-Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
- Department of Botany, Jagannath University, Dhaka 1100, Bangladesh
| | - Benjamin Karikari
- Department of Crop Science, Faculty of Agriculture, Food and Consumer Sciences, University for Development Studies, Tamale P.O. Box TL 1882, Ghana
- Département de Phytologie, Université Laval, Québec, QC G1V 0A6, Canada
| | - Mashiur Rahman Bhuiyan
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture, Zhongshan Biological Breeding Laboratory (ZSBBL), National Innovation Platform for Soybean Breeding and Industry-Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Keke Kong
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture, Zhongshan Biological Breeding Laboratory (ZSBBL), National Innovation Platform for Soybean Breeding and Industry-Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Zheping Yu
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture, Zhongshan Biological Breeding Laboratory (ZSBBL), National Innovation Platform for Soybean Breeding and Industry-Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Chunting Zhang
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture, Zhongshan Biological Breeding Laboratory (ZSBBL), National Innovation Platform for Soybean Breeding and Industry-Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Tuanjie Zhao
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture, Zhongshan Biological Breeding Laboratory (ZSBBL), National Innovation Platform for Soybean Breeding and Industry-Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
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Bae Y, Baek W, Lim CW, Lee SC. A pepper RING-finger E3 ligase, CaFIRF1, negatively regulates the high-salt stress response by modulating the stability of CaFAF1. PLANT, CELL & ENVIRONMENT 2024; 47:1319-1333. [PMID: 38221841 DOI: 10.1111/pce.14818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 12/11/2023] [Accepted: 01/02/2024] [Indexed: 01/16/2024]
Abstract
Controlling protein stability or degradation via the ubiquitin-26S proteasome system is a crucial mechanism in plant cellular responses to stress conditions. Previous studies have revealed that the pepper FANTASTIC FOUR-like gene, CaFAF1, plays a positive role in salt tolerance and that, in this process, CaFAF1 protein degradation is delayed. Here, we sought to isolate the E3 ligases potentially responsible for modulating CaFAF1 protein stability in response to salt stress. The pepper RING-type E3 ligase CaFIRF1 (Capsicum annuum FAF1 Interacting RING Finger protein 1) was found to interact with and ubiquitinate CaFAF1, leading to the degradation of CaFAF1 proteins. In response to high-salt treatments, CaFIRF1-silenced pepper plants exhibited tolerant phenotypes. In contrast, co-silencing of CaFAF1 and CaFIRF1 led to increased sensitivity to high-salt treatments, revealing that CaFIRF1 functions upstream of CaFAF1. A cell-free degradation analysis showed that high-salt treatment suppressed CaFAF1 protein degradation via the 26S proteasome pathway, in which CaFIRF1 is functionally involved. In addition, an in vivo ubiquitination assay revealed that CaFIRF1-mediated ubiquitination of CaFAF1 proteins was reduced by high-salt treatment. Taken together, these findings suggest that the degradation of CaFAF1 mediated by CaFIRF1 has a critical role in pepper plant responses to high salinity.
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Affiliation(s)
- Yeongil Bae
- Department of Life Science (BK21 Program), Chung-Ang University, Seoul, Korea
| | - Woonhee Baek
- Department of Life Science (BK21 Program), Chung-Ang University, Seoul, Korea
| | - Chae Woo Lim
- Department of Life Science (BK21 Program), Chung-Ang University, Seoul, Korea
| | - Sung Chul Lee
- Department of Life Science (BK21 Program), Chung-Ang University, Seoul, Korea
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Meng Y, Lv Q, Li L, Wang B, Chen L, Yang W, Lei Y, Xie Y, Li X. E3 ubiquitin ligase TaSDIR1-4A activates membrane-bound transcription factor TaWRKY29 to positively regulate drought resistance. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:987-1000. [PMID: 38018512 PMCID: PMC10955488 DOI: 10.1111/pbi.14240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/30/2023] [Accepted: 11/04/2023] [Indexed: 11/30/2023]
Abstract
Drought is a deleterious abiotic stress factor that constrains crop growth and development. Post-translational modification of proteins mediated by the ubiquitin-proteasome system is an effective strategy for directing plant responses to stress, but the regulatory mechanisms in wheat remain unclear. In this study, we showed that TaSDIR1-4A is a positive modulator of the drought response. Overexpression of TaSDIR1-4A increased the hypersensitivity of stomata, root length and endogenous abscisic acid (ABA) content under drought conditions. TaSDIR1-4A encodes a C3H2C3-type RING finger protein with E3 ligase activity. Amino acid mutation in its conserved domain led to loss of activity and altered the subcellular localization. The membrane-bound transcription factor TaWRKY29 was identified by yeast two-hybrid screening, and it was confirmed as interacting with TaSDIR1-4A both in vivo and in vitro. TaSDIR1-4A mediated the polyubiquitination and proteolysis of the C-terminal amino acid of TaWRKY29, and its translocation from the plasma membrane to the nucleus. Activated TaWRKY29 bound to the TaABI5 promoter to stimulate its expression, thereby positively regulating the ABA signalling pathway and drought response. Our findings demonstrate the positive role of TaSDIR1-4A in drought tolerance and provide new insights into the involvement of UPS in the wheat stress response.
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Affiliation(s)
- Ying Meng
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of AgronomyNorthwest A&F UniversityYanglingChina
| | - Qian Lv
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of AgronomyNorthwest A&F UniversityYanglingChina
| | - Liqun Li
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of AgronomyNorthwest A&F UniversityYanglingChina
| | - Bingxin Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of AgronomyNorthwest A&F UniversityYanglingChina
| | - Liuping Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of AgronomyNorthwest A&F UniversityYanglingChina
| | - Weibing Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of AgronomyNorthwest A&F UniversityYanglingChina
| | - Yanhong Lei
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of AgronomyNorthwest A&F UniversityYanglingChina
| | - Yanzhou Xie
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of AgronomyNorthwest A&F UniversityYanglingChina
| | - Xuejun Li
- State Key Laboratory of Crop Stress Biology in Arid Areas and College of AgronomyNorthwest A&F UniversityYanglingChina
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12
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Lu T, Zhang W, Abel C, Horion S, Brandt M, Huang K, Fensholt R. Changes in vegetation-water response in the Sahel-Sudan during recent decades. JOURNAL OF HYDROLOGY. REGIONAL STUDIES 2024; 52:101672. [PMID: 38577223 PMCID: PMC10993624 DOI: 10.1016/j.ejrh.2024.101672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 12/17/2023] [Accepted: 01/15/2024] [Indexed: 04/06/2024]
Abstract
Study region The Africa Sahel-Sudan region, defined by annual rainfall between 150 and 1200 mm. Study focus Understanding the mechanism of vegetation response to water availability could help mitigate the potential adverse effects of climate change on global dryland ecosystems. In the Sahel-Sudan region, spatio-temporal changes and drivers of the vegetation-water response remain unclear. This study employs long-term satellite water and vegetation products as proxies of water availability and vegetation productivity to analyze changes in vegetation-water sensitivity and the cumulative effect duration (CED) representing a measure of the legacy effect of the impact of water constraints on vegetation. A random forest model was subsequently used to analyze potential climatic drivers of the observed vegetation response. New hydrological insights for the region During 1982-2016 we found a significant decrease (p < 0.05) in the sensitivity of vegetation productivity to water constraints in 26% of the Sahel-Sudan region, while 9% of the area showed a significantly increased sensitivity, mainly in the sub-humid zone. We further showed that CED significantly increased and decreased, respectively in around 9% of the study area in both cases. Our climatic driver attribution analysis suggested the existence of varying underlying mechanisms governing vegetation productivity in response to water deficit across the Sahel-Sudan dryland ecosystems. Our findings emphasize the need for diverse strategies in sustainable ecosystem management to effectively address these varying mechanisms.
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Affiliation(s)
- Tingting Lu
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Wenmin Zhang
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Christin Abel
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Stéphanie Horion
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Martin Brandt
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Ke Huang
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Rasmus Fensholt
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
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13
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Comte L, Bertrand R, Diamond S, Lancaster LT, Pinsky ML, Scheffers BR, Baecher JA, Bandara RMWJ, Chen IC, Lawlor JA, Moore NA, Oliveira BF, Murienne J, Rolland J, Rubenstein MA, Sunday J, Thompson LM, Villalobos F, Weiskopf SR, Lenoir J. Bringing traits back into the equation: A roadmap to understand species redistribution. GLOBAL CHANGE BIOLOGY 2024; 30:e17271. [PMID: 38613240 DOI: 10.1111/gcb.17271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 03/06/2024] [Accepted: 03/11/2024] [Indexed: 04/14/2024]
Abstract
Ecological and evolutionary theories have proposed that species traits should be important in mediating species responses to contemporary climate change; yet, empirical evidence has so far provided mixed evidence for the role of behavioral, life history, or ecological characteristics in facilitating or hindering species range shifts. As such, the utility of trait-based approaches to predict species redistribution under climate change has been called into question. We develop the perspective, supported by evidence, that trait variation, if used carefully can have high potential utility, but that past analyses have in many cases failed to identify an explanatory value for traits by not fully embracing the complexity of species range shifts. First, we discuss the relevant theory linking species traits to range shift processes at the leading (expansion) and trailing (contraction) edges of species distributions and highlight the need to clarify the mechanistic basis of trait-based approaches. Second, we provide a brief overview of range shift-trait studies and identify new opportunities for trait integration that consider range-specific processes and intraspecific variability. Third, we explore the circumstances under which environmental and biotic context dependencies are likely to affect our ability to identify the contribution of species traits to range shift processes. Finally, we propose that revealing the role of traits in shaping species redistribution may likely require accounting for methodological variation arising from the range shift estimation process as well as addressing existing functional, geographical, and phylogenetic biases. We provide a series of considerations for more effectively integrating traits as well as extrinsic and methodological factors into species redistribution research. Together, these analytical approaches promise stronger mechanistic and predictive understanding that can help society mitigate and adapt to the effects of climate change on biodiversity.
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Affiliation(s)
- Lise Comte
- School of Biological Sciences, Illinois State University, Normal, Illinois, USA
- Conservation Science Partners, Inc., Truckee, California, USA
| | - Romain Bertrand
- Centre de Recherche sur la Biodiversité et l'Environnement (CRBE UMR5300), Université de Toulouse, CNRS, IRD, Toulouse INP, Université Toulouse 3 Paul Sabatier (UT3), Toulouse, France
| | - Sarah Diamond
- Department of Biology, Case Western Reserve University, Cleveland, Ohio, USA
| | | | - Malin L Pinsky
- Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, New Jersey, USA
- Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Santa Cruz, California, USA
| | - Brett R Scheffers
- Department of Wildlife Ecology and Conservation, University of Florida, Gainesville, Florida, USA
| | - J Alex Baecher
- School of Natural Resources and Environment, University of Florida, Gainesville, Florida, USA
| | - R M W J Bandara
- Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, New Jersey, USA
| | - I-Ching Chen
- Department of Life Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Jake A Lawlor
- Department of Biology, McGill University, Montreal, Quebec, Canada
| | - Nikki A Moore
- Department of Biology, McGill University, Montreal, Quebec, Canada
| | - Brunno F Oliveira
- Fondation pour la Recherche sur la Biodiversité (FRB), Centre de Synthèse et d'Analyse sur la Biodiversité (CESAB), Montpellier, France
| | - Jerome Murienne
- Centre de Recherche sur la Biodiversité et l'Environnement (CRBE UMR5300), Université de Toulouse, CNRS, IRD, Toulouse INP, Université Toulouse 3 Paul Sabatier (UT3), Toulouse, France
| | - Jonathan Rolland
- Centre de Recherche sur la Biodiversité et l'Environnement (CRBE UMR5300), Université de Toulouse, CNRS, IRD, Toulouse INP, Université Toulouse 3 Paul Sabatier (UT3), Toulouse, France
| | - Madeleine A Rubenstein
- U.S. Geological Survey National Climate Adaptation Science Center, Reston, Virginia, USA
| | - Jennifer Sunday
- Department of Biology, McGill University, Montreal, Quebec, Canada
| | - Laura M Thompson
- U.S. Geological Survey National Climate Adaptation Science Center, Reston, Virginia, USA
- School of Natural Resources, University of Tennessee, Knoxville, Tennessee, USA
| | - Fabricio Villalobos
- Red de Biología Evolutiva, Instituto de Ecología A.C. - INECOL, Veracruz, Mexico
| | - Sarah R Weiskopf
- U.S. Geological Survey National Climate Adaptation Science Center, Reston, Virginia, USA
| | - Jonathan Lenoir
- UMR CNRS 7058, Ecologie et Dynamique Des Systèmes Anthropisés (EDYSAN), Université de Picardie Jules Verne, Amiens, France
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14
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Zhao N, Zhao J, Li S, Li B, Lv J, Gao X, Xu X, Lu S. The Response of Endogenous ABA and Soluble Sugars of Platycladus orientalis to Drought and Post-Drought Rehydration. BIOLOGY 2024; 13:194. [PMID: 38534463 DOI: 10.3390/biology13030194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 03/28/2024]
Abstract
To uncover the internal mechanisms of various drought stress intensities affecting the soluble sugar content in organs and its regulation by endogenous abscisic acid (ABA), we selected the saplings of Platycladus orientalis, a typical tree species in the Beijing area, as our research subject. We investigated the correlation between tree soluble sugars and endogenous ABA in the organs (comprised of leaf, branch, stem, coarse root, and fine root) under two water treatments. One water treatment was defined as T1, which stopped watering until the potted soil volumetric water content (SWC) reached the wilting coefficient and then rewatered the sapling. The other water treatment, named T2, replenished 95% of the total water loss of one potted sapling every day and irrigated the above-mentioned sapling after its SWC reached the wilt coefficients. The results revealed that (1) the photosynthetic physiological parameters of P. orientalis were significantly reduced (p < 0.05) under fast and slow drought processes. The photosynthetic physiological parameters of P. orientalis in the fast drought-rehydration treatment group recovered faster relative to the slow drought-rehydration treatment group. (2) The fast and slow drought treatments significantly (p < 0.05) increased the ABA and soluble sugar contents in all organs. The roots of the P. orientalis exhibited higher sensitivity in ABA and soluble sugar content to changes in soil moisture dynamics compared to other organs. (3) ABA and soluble sugar content of P. orientalis showed a significant positive correlation (p < 0.05) under fast and slow drought conditions. During the rehydration stage, the two were significantly correlated in the T2 treatment (p < 0.05). In summary, soil drought rhythms significantly affected the photosynthetic parameters, organ ABA, and soluble sugar content of P. orientalis. This study elucidates the adaptive mechanisms of P. orientalis plants to drought and rehydration under the above-mentioned two water drought treatments, offering theoretical insights for selecting and cultivating drought-tolerant tree species.
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Affiliation(s)
- Na Zhao
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, China
- Beijing Yanshan Forest Ecosystem Research Station, National Forest and Grassland Administration, Beijing 100093, China
| | - Jiahui Zhao
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, China
- Beijing Yanshan Forest Ecosystem Research Station, National Forest and Grassland Administration, Beijing 100093, China
- College of Forestry, Shenyang Agricultural University, Shenyang 110866, China
| | - Shaoning Li
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, China
- Beijing Yanshan Forest Ecosystem Research Station, National Forest and Grassland Administration, Beijing 100093, China
- College of Forestry, Shenyang Agricultural University, Shenyang 110866, China
| | - Bin Li
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, China
- Beijing Yanshan Forest Ecosystem Research Station, National Forest and Grassland Administration, Beijing 100093, China
| | - Jiankui Lv
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, China
- Beijing Yanshan Forest Ecosystem Research Station, National Forest and Grassland Administration, Beijing 100093, China
- College of Forestry, Shenyang Agricultural University, Shenyang 110866, China
| | - Xin Gao
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, China
- Beijing Yanshan Forest Ecosystem Research Station, National Forest and Grassland Administration, Beijing 100093, China
- College of Forestry, Shenyang Agricultural University, Shenyang 110866, China
| | - Xiaotian Xu
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, China
- Beijing Yanshan Forest Ecosystem Research Station, National Forest and Grassland Administration, Beijing 100093, China
| | - Shaowei Lu
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100093, China
- Beijing Yanshan Forest Ecosystem Research Station, National Forest and Grassland Administration, Beijing 100093, China
- College of Forestry, Shenyang Agricultural University, Shenyang 110866, China
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15
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Borlay AJ, Mweu CM, Nyanjom SG, Omolo KM, Naitchede LHS. De novo transcriptomic analysis of Doum Palm (Hyphaene compressa) revealed an insight into its potential drought tolerance. PLoS One 2024; 19:e0292543. [PMID: 38470884 DOI: 10.1371/journal.pone.0292543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 09/24/2023] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND Doum palms (Hyphaene compressa) perform a crucial starring role in the lives of Kenya's arid and semi-arid people for empowerment and sustenance. Despite the crop's potential for economic gain, there is a lack of genetic resources and detailed information about its domestication at the molecular level. Given the doum palm's vast potential as a widely distributed plant in semi-arid and arid climates and a source of many applications, coupled with the current changing climate scenario, it is essential to understand the molecular processes that provide drought resistance to this plant. RESULTS Assembly of the first transcriptome of doum palms subjected to water stress generated about 39.97 Gb of RNA-Seq data. The assembled transcriptome revealed 193,167 unigenes with an average length of 1655 bp, with 128,708 (66.63%) successfully annotated in seven public databases. Unigenes exhibited significant differentially expressed genes (DEGs) in well-watered and stressed-treated plants, with 45071 and 42457 accounting for up-regulated and down-regulated DEGs, respectively. GO term, KEGG, and KOG analysis showed that DEGs were functionally enriched cellular processes, metabolic processes, cellular and catalytic activity, metabolism, genetic information processing, signal transduction mechanisms, and posttranslational modification pathways. Transcription factors (TF), such as the MYB, WRKY, NAC family, FAR1, B3, bHLH, and bZIP, were the prominent TF families identified as doum palm DEGs encoding drought stress tolerance. CONCLUSIONS This study provides a complete understanding of DEGs involved in drought stress at the transcriptome level in doum palms. This research is, therefore, the foundation for the characterization of potential genes, leading to a clear understanding of its drought stress responses and providing resources for improved genetic modification.
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Affiliation(s)
- Allen Johnny Borlay
- Department of Biological Sciences, University of Liberia, Monrovia, Liberia
- Department of Molecular Biology and Biotechnology, Pan African University Institute for Basic Sciences, Technology and Innovation, Nairobi, Kenya
| | - Cecilia Mbithe Mweu
- Institute for Biotechnology Research, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Steven Ger Nyanjom
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Kevin Mbogo Omolo
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Labode Hospice Stevenson Naitchede
- Department of Molecular Biology and Biotechnology, Pan African University Institute for Basic Sciences, Technology and Innovation, Nairobi, Kenya
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16
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Paethaisong W, Lakhunthod P, Santanoo S, Chandarak N, Onwan S, Kaewjampa N, Dongsansuk A. Open field hardening improves leaf physiological drought tolerance in young plants of Sindora siamensis. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP23102. [PMID: 38479796 DOI: 10.1071/fp23102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 02/21/2024] [Indexed: 04/04/2024]
Abstract
The effect of drought stress on leaf physiology was studied in 10-month-old plants of Sindora siamensis . Plants were either placed in an open greenhouse (unhardening; UH) or in an open field (open field hardening; H) for 45days. Both the UH and H plants stopped receiving water (D) until the initial drought injury and then rewatered (R) until complete recovery. Results showed necrosis in the leaves of UH+D, while H+D showed wilting at Day 7 after drought. A greater degree of necrosis was found in UH+D+R but made complete recovery in H+D+R at Day 4 after rewatering. Drought stress resulted in decreased leaf area in H, and reduced leaf and stem water status, PSII efficiency, net photosynthetic rate, stomatal conductance and transpiration rate in both UH and H. It also resulted in an increase in water use efficiency in both UH and H. Electrolyte leakage and malondialdehyde contents in UH were markedly increased due to drought stress. These results suggest that unhardened young plants of Sindora exposed to drought exhibited enhanced stomata behaviour by minimising open stomata and transpiration, resulting in high efficiency of water usage. However, there was still membrane damage from lipid peroxidation, which caused necrosis. Open field hardened plants exposed to drought demonstrated reduced open stomata and transpiration, thereby preserving leaf and soil water status and enhancing water use efficiency. This may be a reduction in lipid peroxidation though an oxidative scavenging mechanism that causes a slight alteration in membrane stability and a slight necrosis.
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Affiliation(s)
- Warunya Paethaisong
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Preeyanuch Lakhunthod
- Department of Biological Sciences, Faculty of Science, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand
| | - Supranee Santanoo
- Salt-tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Natthamon Chandarak
- Salt-tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand; and Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sujittra Onwan
- Department of Forest Resource Management Office No. 7, Khon Kaen 40000, Thailand
| | - Naruemol Kaewjampa
- Department of Conservation, Faculty of Forestry, Kasetsart University, Bangkok 10900, Thailand
| | - Anoma Dongsansuk
- Salt-tolerant Rice Research Group, Khon Kaen University, Khon Kaen 40002, Thailand; and Department of Agronomy, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
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17
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Wu L, Yao X, Li H, Chen Y. Hydrogen sulfide regulates arsenic-induced cell death in yeast cells by modulating the antioxidative system. Can J Microbiol 2024; 70:102-108. [PMID: 38096506 DOI: 10.1139/cjm-2023-0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Arsenic (As) is a metal with potentially toxic effects on different organisms. Hydrogen sulfide (H2S) plays a vital role in mitigating heavy metal toxicity by reducing oxidative stress in plants and animals. However, the role of H2S in alleviating arsenic toxicity in yeast cells remains unclear. In this study, the role of NaHS (exogenous physiological H2S) in alleviating As-induced yeast cell death was investigated. Yeast cells in the logarithmic phase were pretreated with 0.05 mmol/L NaHS for 6 h, and then incubated in the YPD medium with or without 1 mmol/L As. After 12 h of treatment, relative survival rate, H2S content, oxidative stress biomarkers, and antioxidant machinery were measured. Our results showed that sodium arsenite-induced yeast cell death and pretreatment with 0.05 mmol/L NaHS significantly alleviated sodium arsenite-induced cell death. Under sodium arsenite conditions, the levels of intracellular reactive oxygen species (ROS) and malondialdehyde (MDA) increased, accompanied by the inhibition of the catalase (CAT) activity and the downregulation of CTT1 expression. However, the activities of the superoxide dismutase (SOD) and glutathion peroxidase (GPX) increased, and the expression of SOD1 and GPX2 was markedly upregulated in the group treated with sodium arsenite. When yeast cells were pretreated with NaHS, the intracellular ROS and MDA levels decreased significantly, and the activities of SOD, CAT, and GPX increased significantly. This was associated with a significant increase in relative survival rate and H2S content compared to the arsenic treatment alone. Our findings indicate that NaHS alleviates sodium arsenite-induced yeast cell death, mainly by enhancing the antioxidant defense system.
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Affiliation(s)
- Lihua Wu
- College of Biological Sciences and Technology, Taiyuan Normal University, Yuci, China
| | - Xia Yao
- College of Biological Sciences and Technology, Taiyuan Normal University, Yuci, China
| | - Haiyan Li
- College of Biological Sciences and Technology, Taiyuan Normal University, Yuci, China
| | - Yanfei Chen
- College of Biological Sciences and Technology, Taiyuan Normal University, Yuci, China
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18
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Li N, Wang B, Zhou Y, Li H, Zhu Z, Dou Y, Huang Y, Jiao F, An S. Response of the C-fixing bacteria community to precipitation changes and its impact on bacterial necromass accumulation in semiarid grassland. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120289. [PMID: 38367498 DOI: 10.1016/j.jenvman.2024.120289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 01/31/2024] [Accepted: 02/03/2024] [Indexed: 02/19/2024]
Abstract
Climate change-induced warming has the potential to intensify drought conditions in certain regions, resulting in uneven precipitation patterns. However, the impact of precipitation-induced changes on soil C-fixing bacterial community composition to changes and their subsequent effect on the accumulation of microbial necromass in the soil remains unclear. To address this knowledge gap, we conducted an in-situ simulated precipitation control experiment in semi-arid grasslands, encompassing five primary precipitation gradients: ambient precipitation as a control (contr), decreased precipitation by 80% and 40% (DP80, DP40), and increased precipitation by 40% and 80% (IP80, IP40). Our findings indicate that while an increase in precipitation promotes greater total bacterial diversity, it reduces the diversity of cbbM-harboring bacteria. The dominance of drought-tolerant Proteobacteria within the cbbM-harboring bacterial community was responsible for the observed increase in their relative abundance, ranging from 8.9% to 15.6%, under conditions of decreased precipitation. In arid environments characterized by limited soil moisture and nutrient availability, certain dominant genera such as Thiobacillus, Sulfuritalea, and Halothiobacillus, which possess cbbM genes, exhibit strong synergistic effects with other bacteria, thereby leading to a high nutrient use efficiency. Linear regression analysis shows that bacterial necromass C was significantly negatively correlated with cbbM-harboring bacterial diversity but positively correlated with cbbM-harboring bacterial community composition. Consequently, in the extreme drought environment of DP80, the contribution of bacterial necromass C to SOC was dramatically reduced by 75% relative to the control. Although bacterial necromass C was preferentially consumed as nutrients and energy for microorganisms, C-fixing microorganisms supplemented the soil C pool by assimilating atmospheric CO2. Bacterial necromass was primarily controlled by accessible C and N rather than by the total bacterial community composition and relative abundance. Our results provide compelling evidence for the critical role of the composition of the bacterial community and its necromass in the accumulation of SOC in semiarid grassland ecosystems.
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Affiliation(s)
- Na Li
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China
| | - Baorong Wang
- College of Grassland Agriculture, Northwest A &F University, Yangling, 712100, China
| | - Yue Zhou
- Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Huijun Li
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhaolong Zhu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China
| | - Yanxing Dou
- College of Forestry, Northwest A &F University, Yangling, 712100, China
| | - Yimei Huang
- Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Feng Jiao
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China
| | - Shaoshan An
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, China.
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19
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Felouah OC, Ammad F, Adda A, Bouzid A, Gharnaout ML, Evon P, Merah O. Morpho-Anatomical Modulation of Seminal Roots in Response to Water Deficit in Durum Wheat ( Triticum turgidum var. durum). PLANTS (BASEL, SWITZERLAND) 2024; 13:487. [PMID: 38498479 PMCID: PMC10892463 DOI: 10.3390/plants13040487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/21/2024] [Accepted: 02/05/2024] [Indexed: 03/20/2024]
Abstract
The productivity of durum wheat in Mediterranean regions is greatly reduced by water deficits that vary in intensity and time of occurrence. The development of more tolerant cultivars is the main solution for fighting these stresses, but this requires prior study of their mechanisms. The involvement of the root system in drought avoidance is of major importance. It is in this context that the present work attempts to establish the impact of morpho-anatomical remodeling of seminal roots on dehydration avoidance at the javelina stage in five durum wheat genotypes grown under three water regimes, 100%, 60% and 30% of field capacity (FC). In the last two treatments, which were applied by stopping irrigation, moisture was concentrated mainly in the depths of the substrate cylinders and was accompanied by greater root elongation compared with the control. The elongation reached rates of 20 and 22% in the ACSAD 1231 genotype and 12 and 13% in the Waha genotype, in the 60% FC and 30% FC treatments respectively. The seminal roots anatomy was also modified by water deficit in all genotypes but to different degrees. The diameter of vessels in the late metaxylem vessels was reduced, reaching 17.3 and 48.2% in the Waha genotype in the 60% FC and 30% FC treatments, respectively. The water deficit also increased the number of vessels in the early metaxylem, while reducing the diameter of its conducting vessels. ACSAD 1361 and Langlois genotypes stood out with the highest rates of diameter reduction. The morpho-anatomical transformations of the roots contributed effectively to the plants' absorption of water and, consequently, to the maintenance of a fairly high relative water content, approaching 80%.
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Affiliation(s)
- Oum Cheikh Felouah
- Laboratory of Agro-Biotechnology and Nutrition in Semi-Arid Zones, Faculty of Nature and Life Sciences, University Ibn-Khaldoun, Tiaret 14000, Algeria (A.B.)
- Laboratory of Plant Physiology Applied to Aboveground Crops, Faculty of Nature and Life Sciences, University-Ibn-Khaldoun, Tiaret 14000, Algeria
| | - Faiza Ammad
- Laboratoire de Recherché Protection et Valorisation des Produits Agrobiologiques, Departement de Biotechnologie, Faculté des Sciences de la Nature et de la vie, Université Blida-1, BP 270, Blida 09000, Algeria;
| | - Ahmed Adda
- Laboratory of Agro-Biotechnology and Nutrition in Semi-Arid Zones, Faculty of Nature and Life Sciences, University Ibn-Khaldoun, Tiaret 14000, Algeria (A.B.)
| | - Assia Bouzid
- Laboratory of Agro-Biotechnology and Nutrition in Semi-Arid Zones, Faculty of Nature and Life Sciences, University Ibn-Khaldoun, Tiaret 14000, Algeria (A.B.)
- Laboratory of Plant Physiology Applied to Aboveground Crops, Faculty of Nature and Life Sciences, University-Ibn-Khaldoun, Tiaret 14000, Algeria
| | | | - Philippe Evon
- Laboratoire de Chimie Agro-industrielle (LCA), Université de Toulouse, INRAe, INPT, 31030 Toulouse, France;
| | - Othmane Merah
- Département Génie Biologique, IUT A, Université Paul Sabatier, 32000 Auch, France;
- Laboratoire de Chimie Agro-industrielle (LCA), Université de Toulouse, INRAe, INPT, 31030 Toulouse, France;
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Dueñas C, Pagano A, Calvio C, Srikanthan DS, Slamet-Loedin I, Balestrazzi A, Macovei A. Genotype-specific germination behavior induced by sustainable priming techniques in response to water deprivation stress in rice. FRONTIERS IN PLANT SCIENCE 2024; 15:1344383. [PMID: 38390302 PMCID: PMC10881859 DOI: 10.3389/fpls.2024.1344383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 01/22/2024] [Indexed: 02/24/2024]
Abstract
Water stress brought about by climate change is among the major global concerns threatening food security. Rice is an important staple food which requires high water resources. Being a semi-aquatic plant, rice is particularly susceptible to drought. The aim of this work was to develop techniques directed to promote rice resilience to water deprivation stress during germination by implementing specific seed priming treatments. Five popular Italian rice varieties were subjected to priming treatments using novel, sustainable solutions, like poly-gamma-glutamic acid (γ-PGA), denatured γ-PGA (dPGA), and iron (Fe) pulsing, alone or in combination. The effect of the developed priming methods was tested under optimal conditions as well as under water deprivation stress imposed by polyethylene glycol (PEG) treatments. The priming efficacy was phenotypically determined in terms of germination behavior by measuring a series of parameters (germinability, germination index, mean germination time, seed vigor index, root and shoot length, germination stress tolerance index). Biochemical analyses were carried out to measure the levels of iron uptake and accumulation of reactive oxygen species (ROS). Integrative data analyses revealed that the rice varieties exhibited a strong genotype- and treatment-specific germination behavior. PEG strongly inhibited germination while most of the priming treatments were able to rescue it in all varieties tested except for Unico, which can be defined as highly stress sensitive. Molecular events (DNA repair, antioxidant response, iron homeostasis) associated with the transition from seed to seedling were monitored in terms of changes in gene expression profiles in two varieties sensitive to water deprivation stress with different responses to priming. The investigated genes appeared to be differentially expressed in a genotype-, priming treatment-, stress- and stage-dependent manner. The proposed seed priming treatments can be envisioned as sustainable and versatile agricultural practices that could help in addressing the impact of climate challenges on the agri-food system.
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Affiliation(s)
- Conrado Dueñas
- Department of Biology and Biotechnology 'L. Spallanzani', University of Pavia, Pavia, Italy
| | - Andrea Pagano
- Department of Biology and Biotechnology 'L. Spallanzani', University of Pavia, Pavia, Italy
| | - Cinzia Calvio
- Department of Biology and Biotechnology 'L. Spallanzani', University of Pavia, Pavia, Italy
| | | | - Inez Slamet-Loedin
- Trait and Genome Engineering Cluster, Rice Breeding Innovations, International Rice Research Institute, Metro Manila, Philippines
| | - Alma Balestrazzi
- Department of Biology and Biotechnology 'L. Spallanzani', University of Pavia, Pavia, Italy
| | - Anca Macovei
- Department of Biology and Biotechnology 'L. Spallanzani', University of Pavia, Pavia, Italy
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Licaj I, Germinario C, Di Meo MC, Varricchio E, Rocco M. The physiology and anatomy study in leaves of Saragolla and Svevo wheat cultivars under polyethylene glycol-simulated drought stress. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP23151. [PMID: 38326232 DOI: 10.1071/fp23151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 01/23/2024] [Indexed: 02/09/2024]
Abstract
Drought stress is increasing in frequency and severity with the progression of global climate change, thereby becoming a major concern for the growth and yield of crop plants, including wheat. The current challenge is to explore different ways of developing wheat genotypes with increased tolerance to drought. Therefore, we renewed interest in 'ancient' varieties expected to be more tolerant to environmental stress than the few elite varieties nowadays cultivated. This study aimed to perform comparative analysis of the effect of drought-simulating polyethylene glycol (PEG-6000) treatment on morpho-anatomical and physiological foliar traits of two durum wheat seedlings cultivars, Saragolla and Svevo, as these can reflect the adaptability of the plant to the environment to a certain extent. Results demonstrated that drought-stressed Saragolla leaves exhibited a greater reduction of stomatal density, a minor reduction of stomatal pore width, a wider xylem vessel mean area, greater compactness of mesophyll cells, a minor loss of chlorophyll content, as well as better photosynthetic and growth performance compared to the other variety. From such behaviours, we consider the Saragolla cultivar more drought tolerant than Svevo and therefore probably very promising for cultivation in dry areas.
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Affiliation(s)
- Ilva Licaj
- Department of Science and Technology, University of Sannio, Benevento 82100, Italy
| | - Chiara Germinario
- Department of Science and Technology, University of Sannio, Benevento 82100, Italy
| | - Maria Chiara Di Meo
- Department of Science and Technology, University of Sannio, Benevento 82100, Italy
| | - Ettore Varricchio
- Department of Science and Technology, University of Sannio, Benevento 82100, Italy
| | - Mariapina Rocco
- Department of Science and Technology, University of Sannio, Benevento 82100, Italy
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22
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Sharma MK, Hopak NE, Chawla A. Alpine plant species converge towards adopting elevation-specific resource-acquisition strategy in response to experimental early snow-melting. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 907:167906. [PMID: 37858830 DOI: 10.1016/j.scitotenv.2023.167906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 10/14/2023] [Accepted: 10/16/2023] [Indexed: 10/21/2023]
Abstract
Snow-melt is one of the important factors limiting growth and survival of alpine plants. Changes in snow-melt timing have profound effects on eco-physiological characteristics of alpine plant species through alterations in growing season length. Here, we conducted a field experiment and studied species response to experimentally induced early snow-melting (ES) (natural vs. early) at an alpine site (Rohtang) in the western Himalaya region. Eco-physiological response of eight snow-bed restricted alpine plant species from different elevations (lower: 3850 m and upper: 4150 m amsl) and belonging to contrasting resource acquisition strategies (conservative and acquisitive) were studied after 2-years (2019 & 2020) of initiating ES field experiment. We estimated the functional traits related to leaf economic spectrum and physiological performance and assessed their pattern of phenotypic plasticity. Analysis by linear mixed effect model showed that both the 'conservative' and 'acquisitive' species had responded to ES with significant effects on species specific leaf area, leaf dry matter content, leaf thickness, leaf water content and sugar content. Our results also revealed that ES treatment induced significant increase in leaf C/N ratio (10.57 % to 13.65 %) and protein content (15.85 % to 20.76 %) at both the elevations, irrespective of species groups. The phenotypic plasticity was found to be low and was essentially species-specific. However, for leaf protein content, the upper elevation species exhibited a higher phenotypic plasticity (0.43 ± 0.18) than the lower elevation species (0.31 ± 0.21). Interestingly, we found that irrespective of species unique functional strategy, species adapt to perform more conservative at lower elevation and more acquisitive at upper elevation, in response to ES. We conclude that plants occurring at contrasting elevations respond differentially to ES. However, species showed capacity for short-term acclimation to future environmental conditions, but may be vulnerable, if their niche is occupied by new species with greater phenotypic plasticity and a superior competitive ability.
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Affiliation(s)
- Manish K Sharma
- Environmental Technology Division, CSIR-Institute of Himalayan Bioresource Technology (CSIR-IHBT), Palampur, Himachal Pradesh 176 061, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India; Centre for High Altitude Biology (CeHAB), Research Centre of CSIR-IHBT, Ribling, P.O. Tandi, District Lahaul and Spiti, Himachal Pradesh 175132, India
| | - Nang Elennie Hopak
- Environmental Technology Division, CSIR-Institute of Himalayan Bioresource Technology (CSIR-IHBT), Palampur, Himachal Pradesh 176 061, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India; Centre for High Altitude Biology (CeHAB), Research Centre of CSIR-IHBT, Ribling, P.O. Tandi, District Lahaul and Spiti, Himachal Pradesh 175132, India
| | - Amit Chawla
- Environmental Technology Division, CSIR-Institute of Himalayan Bioresource Technology (CSIR-IHBT), Palampur, Himachal Pradesh 176 061, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201 002, India; Centre for High Altitude Biology (CeHAB), Research Centre of CSIR-IHBT, Ribling, P.O. Tandi, District Lahaul and Spiti, Himachal Pradesh 175132, India.
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23
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Rodrigues AP, Pais IP, Leitão AE, Dubberstein D, Lidon FC, Marques I, Semedo JN, Rakocevic M, Scotti-Campos P, Campostrini E, Rodrigues WP, Simões-Costa MC, Reboredo FH, Partelli FL, DaMatta FM, Ribeiro-Barros AI, Ramalho JC. Uncovering the wide protective responses in Coffea spp. leaves to single and superimposed exposure of warming and severe water deficit. FRONTIERS IN PLANT SCIENCE 2024; 14:1320552. [PMID: 38259931 PMCID: PMC10801242 DOI: 10.3389/fpls.2023.1320552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 11/30/2023] [Indexed: 01/24/2024]
Abstract
Climate changes boosted the frequency and severity of drought and heat events, with aggravated when these stresses occur simultaneously, turning crucial to unveil the plant response mechanisms to such harsh conditions. Therefore, plant responses/resilience to single and combined exposure to severe water deficit (SWD) and heat were assessed in two cultivars of the main coffee-producing species: Coffea arabica cv. Icatu and C. canephora cv. Conilon Clone 153 (CL153). Well-watered plants (WW) were exposed to SWD under an adequate temperature of 25/20°C (day/night), and thereafter submitted to a gradual increase up to 42/30°C, and a 14-d recovery period (Rec14). Greater protective response was found to single SWD than to single 37/28°C and/or 42/30°C (except for HSP70) in both cultivars, but CL153-SWD plants showed the larger variations of leaf thermal imaging crop water stress index (CWSI, 85% rise at 37/28°C) and stomatal conductance index (IG, 66% decline at 25/20°C). Both cultivars revealed great resilience to SWD and/or 37/28°C, but a tolerance limit was surpassed at 42/30°C. Under stress combination, Icatu usually displayed lower impacts on membrane permeability, and PSII function, likely associated with various responses, usually mostly driven by drought (but often kept or even strengthened under SWD and 42/30°C). These included the photoprotective zeaxanthin and lutein, antioxidant enzymes (superoxide dismutase, Cu,Zn-SOD; ascorbate peroxidase, APX), HSP70, arabinose and mannitol (involving de novo sugar synthesis), contributing to constrain lipoperoxidation. Also, only Icatu showed a strong reinforcement of glutathione reductase activity under stress combination. In general, the activities of antioxidative enzymes declined at 42/30°C (except Cu,Zn-SOD in Icatu and CAT in CL153), but HSP70 and raffinose were maintained higher in Icatu, whereas mannitol and arabinose markedly increased in CL153. Overall, a great leaf plasticity was found, especially in Icatu that revealed greater responsiveness of coordinated protection under all experimental conditions, justifying low PIChr and absence of lipoperoxidation increase at 42/30°C. Despite a clear recovery by Rec14, some aftereffects persisted especially in SWD plants (e.g., membranes), relevant in terms of repeated stress exposure and full plant recovery to stresses.
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Affiliation(s)
- Ana P. Rodrigues
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
| | - Isabel P. Pais
- Unidade de Investigação em Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária, I.P. (INIAV), Oeiras, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - António E. Leitão
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - Danielly Dubberstein
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
- Centro Univ. Norte do Espírito Santo (CEUNES), Dept. Ciências Agrárias e Biológicas (DCAB), Univ. Federal Espírito Santo (UFES), São Mateus, ES, Brazil
- Assistência Técnica e Gerencial em Cafeicultura - Serviço Nacional de Aprendizagem Rural (SENAR), Porto Velho, RO, Brazil
| | - Fernando C. Lidon
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - Isabel Marques
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
| | - José N. Semedo
- Unidade de Investigação em Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária, I.P. (INIAV), Oeiras, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - Miroslava Rakocevic
- Centro Univ. Norte do Espírito Santo (CEUNES), Dept. Ciências Agrárias e Biológicas (DCAB), Univ. Federal Espírito Santo (UFES), São Mateus, ES, Brazil
| | - Paula Scotti-Campos
- Unidade de Investigação em Biotecnologia e Recursos Genéticos, Instituto Nacional de Investigação Agrária e Veterinária, I.P. (INIAV), Oeiras, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - Eliemar Campostrini
- Setor de Fisiologia Vegetal, Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Rio de Janeiro, Brazil
| | - Weverton P. Rodrigues
- Setor de Fisiologia Vegetal, Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Rio de Janeiro, Brazil
- Centro de Ciências Agrárias, Naturais e Letras, Universidade Estadual da Região Tocantina do Maranhão, Maranhão, Brazil
| | - Maria Cristina Simões-Costa
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
| | - Fernando H. Reboredo
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - Fábio L. Partelli
- Centro Univ. Norte do Espírito Santo (CEUNES), Dept. Ciências Agrárias e Biológicas (DCAB), Univ. Federal Espírito Santo (UFES), São Mateus, ES, Brazil
| | - Fábio M. DaMatta
- Departamento de Biologia Vegetal, Universidade Federal Viçosa (UFV), Viçosa, MG, Brazil
| | - Ana I. Ribeiro-Barros
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
| | - José C. Ramalho
- Laboratório de Interações Planta-Ambiente e Biodiversidade (PlantStress & Biodiversity), Centro de Estudos Florestais (CEF), Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Oeiras, Lisboa, Portugal
- Laboratório Associado TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, (ISA/ULisboa), Lisboa, Portugal
- Unidade de GeoBiociências, GeoEngenharias e GeoTecnologias (GeoBioTec), Faculdade de Ciências e Tecnologia (FCT), Universidade NOVA de Lisboa (UNL), Caparica, Portugal
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24
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Avalbaev A, Fedyaev V, Lubyanova A, Yuldashev R, Allagulova C. 24-Epibrassinolide Reduces Drought-Induced Oxidative Stress by Modulating the Antioxidant System and Respiration in Wheat Seedlings. PLANTS (BASEL, SWITZERLAND) 2024; 13:148. [PMID: 38256702 PMCID: PMC10818601 DOI: 10.3390/plants13020148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/29/2023] [Accepted: 12/31/2023] [Indexed: 01/24/2024]
Abstract
Brassinosteroids (BRs) represent a group of plant signaling molecules with a steroidal skeleton that play an essential role in plant adaptation to different environmental stresses, including drought. In this work, the effect of pretreatment with 0.4 µM 24-epibrassinolide (EBR) on the oxidant/antioxidant system in 4-day-old wheat seedlings (Triticum aestivum L.) was studied under moderate drought stress simulated by 12% polyethylene glycol 6000 (PEG). It was revealed that EBR-pretreatment had a protective effect on wheat plants as evidenced by the maintenance of their growth rate, as well as the reduction in lipid peroxidation and electrolyte leakage from plant tissues under drought conditions. This effect was likely due to the ability of EBR to reduce the stress-induced accumulation of reactive oxygen species (ROS) and modulate the activity of antioxidant enzymes. Meanwhile, EBR pretreatment enhanced proline accumulation and increased the barrier properties of the cell walls in seedlings by accelerating the lignin deposition. Moreover, the ability of EBR to prevent a drought-caused increase in the intensity of the total dark respiration and the capacity of alternative respiration contributes significantly to the antistress action of this hormone.
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Affiliation(s)
- Azamat Avalbaev
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 71 Pr. Oktyabrya, Ufa 450054, Russia; (A.L.); (R.Y.); (C.A.)
| | - Vadim Fedyaev
- Institute of Nature and Human, Ufa University of Sciences and Technology, 32 Zaki Validi, Ufa 450076, Russia;
| | - Alsu Lubyanova
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 71 Pr. Oktyabrya, Ufa 450054, Russia; (A.L.); (R.Y.); (C.A.)
| | - Ruslan Yuldashev
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 71 Pr. Oktyabrya, Ufa 450054, Russia; (A.L.); (R.Y.); (C.A.)
| | - Chulpan Allagulova
- Institute of Biochemistry and Genetics—Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences, 71 Pr. Oktyabrya, Ufa 450054, Russia; (A.L.); (R.Y.); (C.A.)
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25
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Liu N, Zhao X, Zhang X, Zhao J, Wang H, Wu D. Remotely sensed evidence of the divergent climate impacts of wind farms on croplands and grasslands. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167203. [PMID: 37730031 DOI: 10.1016/j.scitotenv.2023.167203] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/09/2023] [Accepted: 09/17/2023] [Indexed: 09/22/2023]
Abstract
To mitigate climate change, the utilization of wind energy has rapidly expanded over the last two decades. However, when producing clean electricity, wind farms (WFs) may in turn alter the local climate by interfering in land surface-atmosphere interactions. Currently, China and the United States have the highest wind energy capacities globally. Thus, quantitatively analyzing the impacts of WFs on land surface temperature (LST) between the two countries is valuable to deeply understand the climate impact of WF. In this study, we use the moderate-resolution imaging spectroradiometer (MODIS) time series from 2001 to 2018 to reveal the impacts of 186 WFs (76 in China and 110 in the US) on local LSTs. The remote sensing observations reveal that WFs generally lead to warming impacts in both countries, with stronger effects in the US compared to China. During the daytime, WFs in the US exhibit a significant warming effect of 0.08 °C (p < 0.05), while the impact in China is nonsignificant (0.06 °C, p = 0.15). At night, the warming impacts in the US are approximately 1.7 times greater than in China (0.19 °C vs. 0.11 °C). Differences in the LST impacts between the two countries are primarily driven by cropland WFs, which cause more significant cooling effects in China (-0.34 °C in the daytime and - 0.19 °C at night, p < 0.01) compared to the US. However, these differences are not significant for grassland WFs. Moreover, the impacts of WFs on croplands' LSTs are strongly correlated with their evapotranspiration impacts, likely influenced by irrigation practices. In addition to evapotranspiration, a machine learning model suggests that background climate and terrain factors can alter the LST impacts. Our observations in the two largest WF-deployment countries provide a new understanding of the climate impacts of WFs, which should be considered in the fields of wind and renewable energy deployment.
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Affiliation(s)
- Naijing Liu
- State Key Laboratory of Remote Sensing Science, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; Beijing Engineering Research Center for Global Land Remote Sensing Products, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; POWERCHINA Northwest Engineering Corporation Limited, Xi'an, Shaanxi 710065, China
| | - Xiang Zhao
- State Key Laboratory of Remote Sensing Science, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; Beijing Engineering Research Center for Global Land Remote Sensing Products, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China.
| | - Xin Zhang
- School of Computing, Mathematics and Digital Technology, Manchester Metropolitan University, Manchester M1 5GD, UK
| | - Jiacheng Zhao
- State Key Laboratory of Remote Sensing Science, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; Beijing Engineering Research Center for Global Land Remote Sensing Products, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
| | - Haoyu Wang
- School of Earth and Space Sciences, Peking University, Beijing 100871, China
| | - Donghai Wu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
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Ilyas MZ, Park H, Jang SJ, Cho J, Sa KJ, Lee JK. Association Mapping for Evaluation of Population Structure, Genetic Diversity, and Physiochemical Traits in Drought-Stressed Maize Germplasm Using SSR Markers. PLANTS (BASEL, SWITZERLAND) 2023; 12:4092. [PMID: 38140419 PMCID: PMC10747078 DOI: 10.3390/plants12244092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023]
Abstract
Globally, maize is one of the most consumed crops along with rice and wheat. However, maize is sensitive to different abiotic stress factors, such as drought, which have a significant impact on its production. The aims of this study were to investigate (1) genetic variation among 41 maize-inbred lines and the relationships among them and (2) significant marker-trait associations (SMTAs) between 7 selected physiochemical traits and 200 simple sequence repeat (SSR) markers to examine the genetics of these traits. A total of 1023 alleles were identified among the 41 maize-inbred lines using the 200 SSR loci, with a mean of 5.1 alleles per locus. The average major allele frequency, gene diversity, and polymorphism information content were 0.498, 0.627, and 0.579, respectively. The population structure analysis based on the 200 SSR loci divided the maize germplasm into two primary groups with an admixed group. Moreover, this study identified, respectively, 85 SMTAs and 31 SMTAs using a general linear model (Q GLM) and a mixed linear model (Q + K MLM) with statistically significant (p < 0.05 and <0.01) associations with the seven physiochemical traits (caffeic acid content, chlorogenic acid content, gallic acid content, ferulic acid content, 2,2-diphenyl-1-picrylhydrazyl free radical scavenging activity, leaf relative moisture content, total phenolic content). These SSR markers were highly correlated with one or more of the seven physiochemical traits. This study provides insights into the genetics of the 41 maize-inbred lines and their seven physiochemical traits and will be of assistance to breeders in the marker-assisted selection of maize for breeding programs.
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Affiliation(s)
- Muhammad Zahaib Ilyas
- Department of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea; (M.Z.I.); (H.P.); (S.J.J.); (J.C.)
| | - Hyeon Park
- Department of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea; (M.Z.I.); (H.P.); (S.J.J.); (J.C.)
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - So Jung Jang
- Department of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea; (M.Z.I.); (H.P.); (S.J.J.); (J.C.)
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Jungeun Cho
- Department of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea; (M.Z.I.); (H.P.); (S.J.J.); (J.C.)
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Kyu Jin Sa
- Department of Crop Science, College of Ecology & Environmental Sciences, Kyungpook National University, Sangju 37224, Republic of Korea;
| | - Ju Kyong Lee
- Department of Applied Plant Sciences, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Republic of Korea; (M.Z.I.); (H.P.); (S.J.J.); (J.C.)
- Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Republic of Korea
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Espley RV, Jaakola L. The role of environmental stress in fruit pigmentation. PLANT, CELL & ENVIRONMENT 2023; 46:3663-3679. [PMID: 37555620 DOI: 10.1111/pce.14684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/24/2023] [Accepted: 07/31/2023] [Indexed: 08/10/2023]
Abstract
For many fruit crops, the colour of the fruit outwardly defines its eating quality. Fruit pigments provide reproductive advantage for the plant as well as providing protection against unfavourable environmental conditions and pathogens. For consumers these colours are considered attractive and provide many of the dietary benefits derived from fruits. In the majority of species, the main pigments are either carotenoids and/or anthocyanins. They are produced in the fruit as part of the ripening process, orchestrated by phytohormones and an ensuing transcriptional cascade, culminating in pigment biosynthesis. Whilst this is a controlled developmental process, the production of pigments is also attuned to environmental conditions such as light quantity and quality, availability of water and ambient temperature. If these factors intensify to stress levels, fruit tissues respond by increasing (or ceasing) pigment production. In many cases, if the stress is not severe, this can have a positive outcome for fruit quality. Here, we focus on the principal environmental factors (light, temperature and water) that can influence fruit colour.
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Affiliation(s)
- Richard V Espley
- Department of New Cultivar Innovation, The New Zealand Institute for Plant and Food Research Ltd, Auckland, New Zealand
| | - Laura Jaakola
- Department of Arctic and Marine Biology, UiT The Arctic University of Norway, Tromsø, Norway
- Norwegian Institute of Bioeconomy Research (NIBIO), Ås, Norway
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Liu W, Thapa P, Park SW. RD29A and RD29B rearrange genetic and epigenetic markers in priming systemic defense responses against drought and salinity. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 337:111895. [PMID: 37838156 DOI: 10.1016/j.plantsci.2023.111895] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/18/2023] [Accepted: 10/10/2023] [Indexed: 10/16/2023]
Abstract
Drought has become the most important limiting factor to crop productions. Research thus far has been devoted to identifying drought-responsive genes (DRGs) via breeding and engineering approaches. Still, these efforts have not resulted in a solution to combat drought's effects because the ectopic expression of most DRGs causes adverse effects that reduce plant growth and yields. Lately, we discovered that two DRGs, Response to Desiccation (RD)29A and RD29B, induced by Paenibacillus polymyxa CR1, a plant growth-promoting rhizobacterium capable of priming drought tolerance and concurrently stimulating plant growth, play pivotal roles in defense responses against drought. In this study, we employ the ChlP and qRT-PCR analyses and further clarify that P. polymyxa CR1 reformats the chromatin/transcriptional memory of RD29s, positioned as upstream controllers that fine-tune the temporal dynamic of stress-regulating transcription factors (TFs) in elaborating induced systemic drought tolerance without growth penalties. Two genes coordinate the upregulation of NAC TFs, while feedback inhibiting CBF TFs, which regulate downstream DRG expressions. This supports that RD29s are unique, feasible transgene candidates for improving plants' survival capacity in both optimal and drought conditions. However, the mode of action of RD29A and RD29B are partly independent, exerting distinct roles in disparate ecological states. When subjected to increasing NaCl concentrations, the KO mutant of RD29A (rd29a) displayed enhanced tolerance compared to WT and rd29b plants, proposing that RD29B, but not RD29A, a key player in conferring WT-like tolerance to salinity stress; further studies will be needed to optimize/maximize their applications in engineering for-profit drought and/or broad-spectrum stress tolerant crops.
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Affiliation(s)
- Wenshan Liu
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, USA
| | - Parbati Thapa
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, USA
| | - Sang-Wook Park
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, USA.
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29
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Kadje CK, Yakam AN, Bowong S, Mophou G. Theoretical Assessment of the Impact of Water Stress on Plants Production: Case of Banana-Plantain. Acta Biotheor 2023; 71:24. [PMID: 37966530 DOI: 10.1007/s10441-023-09473-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/11/2023] [Indexed: 11/16/2023]
Abstract
The aim of this paper is to investigate the role of water stress on plants production. We propose a mathematical model for the dynamics growth of plants that takes into account the concentration of available water in the soil, water stress, plant production and plants compensation. Sensitivity analysis of the model has been performed in order to determine the impact of related parameters on the dynamics growth of plants. We present the theoretical analysis of the model with and without water stress. More precisely, we show that the full model is well-posedness. For each model, we compute the trivial equilibria and derive two thresholds parameters that determine the outcome of water stress within a plantation. Further, we perform numerical simulation on the case of banana-plantain simulations to support the theory. We found that the Hopf bifurcation occurs for a specific value of the water absorption rate of unstressed plants. The impact of the water stress on the banana-plantain production is also numerically investigated. After, the role of the water stress on the plant production is numerically investigated. We found that the water stress can cause about 68.16% of loss of banana-plantain production within a plantation with 1600 rejets initially planted. This suggests that climate change plays a detrimental role on banana-plantains production.
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Affiliation(s)
- Carmelle Kabiwa Kadje
- Laboratory of Mathematics, Department of Mathematics and Computer Science Faculty of Sciences, The University of Douala, PO Box 24157, Douala, Cameroon
- IRD, Sorbonne University, UMMISCO, F-93143, Bondy, France
- AIMS Cameroon South West Region, Crystal Garden, P.O. Box 608, Limbe, Cameroon
| | - André Nana Yakam
- Faculty of Economics Sciences and Applied Management, The University of Douala, PO Box 17273, Douala, Cameroon
- IRD, Sorbonne University, UMMISCO, F-93143, Bondy, France
| | - Samuel Bowong
- Laboratory of Mathematics, Department of Mathematics and Computer Science Faculty of Sciences, The University of Douala, PO Box 24157, Douala, Cameroon.
- IRD, Sorbonne University, UMMISCO, F-93143, Bondy, France.
| | - Gisèle Mophou
- Laboratoire de Mathématiques Informatique et Applications (LAMIA), Université des Antilles (UA), Pointe-à-Pitre, Guadeloupe
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Zhou M, Jin X, Jiang M, Lü X, Lou Y. Helophytes adapt to water and N-enrichment stresses by adjusting and coordinating stoichiometry characteristics in main organs. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 898:165538. [PMID: 37454833 DOI: 10.1016/j.scitotenv.2023.165538] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 07/12/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Exploring the adaptation strategies of plants under stressful environments from an ecological stoichiometry perspective is a critical but underexplored research topic, and multi-organ collaborative research for multi-species can provide a comprehensive understanding. In this study, helophytes were selected as the subjects, and water depth and water N-enrichment were set as the stressors. A simulation experiment including three water depths (drought stress, control and flooding stress) and four water N-enrichment levels (control, low, medium and high N-enrichment stresses) for six helophyte species was carried out. Overall, C concentrations in all plant organs remained stable under water (drought-flooding stress) and N-enrichment stress. N concentrations increased under both flooding and drought stresses, while P concentrations and the N:P ratio showed an increase and decrease under only flooding stress, respectively. N concentration and N:P ratio increased with water N-enrichment level. The interaction only promoted the accumulation of N concentrations in aboveground organs. Especially, several species also changed organ C concentrations to adapt to water stress and adjusted root N concentrations for the combined stresses of flooding or drought and high N. Leaf and stem were strongly synergistic in N element, and leaf and root were mainly synergistic in P element. Water N-enrichment determined organ element concentrations more than water depth, and species identity dictated organ C:N:P ratios. Our results reveal that the allocation and synergy of nutrients among organs are important adaptive strategies for plants in stressful environments. Meanwhile, increasing water N-enrichment can be an unignored stressor, and species identity should be paid attention as a countermeasure.
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Affiliation(s)
- Mengdie Zhou
- Key Laboratory of Wetland Ecology and Environment & Jilin Provincial Joint Key Laboratory of Changbai Mountain Wetland and Ecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xianglong Jin
- Key Laboratory of Wetland Ecology and Environment & Jilin Provincial Joint Key Laboratory of Changbai Mountain Wetland and Ecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ming Jiang
- Key Laboratory of Wetland Ecology and Environment & Jilin Provincial Joint Key Laboratory of Changbai Mountain Wetland and Ecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Xianguo Lü
- Key Laboratory of Wetland Ecology and Environment & Jilin Provincial Joint Key Laboratory of Changbai Mountain Wetland and Ecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Yanjing Lou
- Key Laboratory of Wetland Ecology and Environment & Jilin Provincial Joint Key Laboratory of Changbai Mountain Wetland and Ecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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31
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Chowdhury RH, Eti FS, Ahmed R, Gupta SD, Jhan PK, Islam T, Bhuiyan MAR, Rubel MH, Khayer A. Drought-responsive genes in tomato: meta-analysis of gene expression using machine learning. Sci Rep 2023; 13:19374. [PMID: 37938584 PMCID: PMC10632472 DOI: 10.1038/s41598-023-45942-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 10/26/2023] [Indexed: 11/09/2023] Open
Abstract
Plants have diverse molecular mechanisms to protect themselves from biotic and abiotic stressors and adapt to changing environments. To uncover the genetic potential of plants, it is crucial to understand how they adapt to adverse conditions by analyzing their genomic data. We analyzed RNA-Seq data from different tomato genotypes, tissue types, and drought durations. We used a time series scale to identify early and late drought-responsive gene modules and applied a machine learning method to identify the best responsive genes to drought. We demonstrated six candidate genes of tomato viz. Fasciclin-like arabinogalactan protein 2 (FLA2), Amino acid transporter family protein (ASCT), Arginine decarboxylase 1 (ADC1), Protein NRT1/PTR family 7.3 (NPF7.3), BAG family molecular chaperone regulator 5 (BAG5) and Dicer-like 2b (DCL2b) were responsive to drought. We constructed gene association networks to identify their potential interactors and found them drought-responsive. The identified candidate genes can help to explore the adaptation of tomato plants to drought. Furthermore, these candidate genes can have far-reaching implications for molecular breeding and genome editing in tomatoes, providing insights into the molecular mechanisms that underlie drought adaptation. This research underscores the importance of the genetic basis of plant adaptation, particularly in changing climates and growing populations.
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Affiliation(s)
- Rabiul Haq Chowdhury
- Department of Agriculture, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Fatiha Sultana Eti
- Faculty of Agricultural Sciences, Georg-August Universität Göttingen, Büsgenweg 5, 37077, Göttingen, Germany
| | - Rayhan Ahmed
- Department of Agriculture, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Shipan Das Gupta
- Department of Biotechnology and Genetic Engineering, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Pijush Kanti Jhan
- Department of Agriculture, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Tofazzal Islam
- Institute of Biotechnology and Genetic Engineering (IBGE), Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Md Atiqur Rahman Bhuiyan
- Department of Agriculture, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh
| | - Mehede Hassan Rubel
- Department of Agriculture, Noakhali Science and Technology University, Sonapur, 3814, Bangladesh.
| | - Abul Khayer
- Faculty of Agricultural Sciences, Georg-August Universität Göttingen, Büsgenweg 5, 37077, Göttingen, Germany.
- Computomics GmbH, Eisenbahnstr. 1, 72072, Tübingen, Germany.
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Javed T, Shabbir R, Hussain S, Naseer MA, Ejaz I, Ali MM, Ahmar S, Yousef AF. Nanotechnology for endorsing abiotic stresses: a review on the role of nanoparticles and nanocompositions. FUNCTIONAL PLANT BIOLOGY : FPB 2023; 50:831-849. [PMID: 36043237 DOI: 10.1071/fp22092] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
Environmental stresses, including the salt and heavy metals contaminated sites, signify a threat to sustainable crop production. The existence of these stresses has increased in recent years due to human-induced climate change. In view of this, several remediation strategies including nanotechnology have been studied to find more effective approaches for sustaining the environment. Nanoparticles, due to unique physiochemical properties; i.e. high mobility, reactivity, high surface area, and particle morphology, have shown a promising solution to promote sustainable agriculture. Crop plants easily take up nanoparticles, which can penetrate into the cells to play essential roles in growth and metabolic events. In addition, different iron- and carbon-based nanocompositions enhance the removal of metals from the contaminated sites and water; these nanoparticles activate the functional groups that potentially target specific molecules of the metal pollutants to obtain efficient remediation. This review article emphasises the recent advancement in the application of nanotechnology for the remediation of contaminated soils with metal pollutants and mitigating different abiotic stresses. Different implementation barriers are also discussed. Furthermore, we reported the opportunities and research directions to promote sustainable development based on the application of nanotechnology.
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Affiliation(s)
- Talha Javed
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; and Department of Agronomy, University of Agriculture, Faisalabad 38040, Pakistan
| | - Rubab Shabbir
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Sadam Hussain
- College of Agronomy, Northwest Agriculture and Forestry University, Yangling, Shaanxi, China
| | - Muhammad Asad Naseer
- College of Agronomy, Northwest Agriculture and Forestry University, Yangling, Shaanxi, China
| | - Irsa Ejaz
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100194, China
| | - Muhamamd Moaaz Ali
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Sunny Ahmar
- Institute of Biology, Biotechnology, and Environmental Protection, Faculty of Natural Sciences, University of Silesia, Katowice, Poland
| | - Ahmed Fathy Yousef
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Sharma A, Gupta A, Ramakrishnan M, Ha CV, Zheng B, Bhardwaj M, Tran LSP. Roles of abscisic acid and auxin in plants during drought: A molecular point of view. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 204:108129. [PMID: 37897894 DOI: 10.1016/j.plaphy.2023.108129] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 09/29/2023] [Accepted: 10/19/2023] [Indexed: 10/30/2023]
Abstract
Plant responses to drought are mediated by hormones like ABA (abscisic acid) and auxin. These hormones regulate plant drought responses by modulating various physiological and biological processes via cell signaling. ABA accumulation and signaling are central to plant drought responses. Auxin also regulates plant adaptive responses to drought, especially via signal transduction mediated by the interaction between ABA and auxin. In this review, we explored the interactive roles of ABA and auxin in the modulation of stomatal movement, root traits and accumulation of reactive oxygen species associated with drought tolerance.
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Affiliation(s)
- Anket Sharma
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA; State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Aarti Gupta
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA.
| | - Muthusamy Ramakrishnan
- State Key Laboratory of Tree Genetics and Breeding, Co-Innovation Center for Sustainable Forestry in Southern China, Bamboo Research Institute, Key Laboratory of National Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, School of Life Sciences, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China
| | - Chien Van Ha
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA
| | - Bingsong Zheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Mamta Bhardwaj
- Department of Botany, Hindu Girls College, Maharshi Dayanand University, Sonipat, 131001, India
| | - Lam-Son Phan Tran
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA.
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Bae Y, Song SJ, Lim CW, Kim CM, Lee SC. Tomato salt-responsive pseudo-response regulator 1, SlSRP1, negatively regulates the high-salt and dehydration stress responses. PHYSIOLOGIA PLANTARUM 2023; 175:e14082. [PMID: 38148202 DOI: 10.1111/ppl.14082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 10/29/2023] [Accepted: 10/31/2023] [Indexed: 12/28/2023]
Abstract
Under severe environmental stress conditions, plants inhibit their growth and development and initiate various defense mechanisms to survive. The pseudo-response regulator (PRRs) genes have been known to be involved in fruit ripening and plant immunity in various plant species, but their role in responses to environmental stresses, especially high salinity and dehydration, remains unclear. Here, we focused on PRRs in tomato plants and identified two PRR2-like genes, SlSRP1 and SlSRP1H, from the leaves of salt-treated tomato plants. After exposure to dehydration and high-salt stresses, expression of SISRP1, but not SlSRP1H, was significantly induced in tomato leaves. Subcellular localization analysis showed that SlSRP1 was predominantly located in the nucleus, while SlSRP1H was equally distributed in the nucleus and cytoplasm. To further investigate the potential role of SlSRP1 in the osmotic stress response, we generated SISRP1-silenced tomato plants. Compared to control plants, SISRP1-silenced tomato plants exhibited enhanced tolerance to high salinity, as evidenced by a high accumulation of proline and reduced chlorosis, ion leakage, and lipid peroxidation. Moreover, SISRP1-silenced tomato plants showed dehydration-tolerant phenotypes with enhanced abscisic acid sensitivity and increased expression of stress-related genes, including SlRD29, SlAREB, and SlDREB2. Overall, our findings suggest that SlSRP1 negatively regulates the osmotic stress response.
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Affiliation(s)
- Yeongil Bae
- Department of Life Science (BK21 program), Chung-Ang University, Seoul, Korea
| | - Se Jin Song
- Department of Horticulture Industry, Wonkwang University, Iksan, Jeonbuk, Korea
| | - Chae Woo Lim
- Department of Life Science (BK21 program), Chung-Ang University, Seoul, Korea
| | - Chul Min Kim
- Department of Horticulture Industry, Wonkwang University, Iksan, Jeonbuk, Korea
| | - Sung Chul Lee
- Department of Life Science (BK21 program), Chung-Ang University, Seoul, Korea
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35
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Jadhao KR, Kale SS, Chavan NS, Janjal PH. Genome-wide analysis of the SPL transcription factor family and its response to water stress in sunflower (Helianthus annuus). Cell Stress Chaperones 2023; 28:943-958. [PMID: 37938528 PMCID: PMC10746691 DOI: 10.1007/s12192-023-01388-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 11/09/2023] Open
Abstract
SPL (SQUAMOSA promoter binding proteins-like) are plant-specific transcription factors that play essential roles in a variety of developmental processes as well as the ability to withstand biotic and abiotic stresses. To date, numerous species have been investigated for the SPL gene family, but so far, no SPL family genes have been thoroughly identified and characterized in the sunflower (Helianthus annuus). In this study, 25 SPL genes were identified in the sunflower genome and were unevenly distributed on 11 chromosomes. According to phylogeny analysis, 59 SPL genes from H. annuus, O. sativa, and A. thaliana were clustered into seven groups. Furthermore, the SPL genes in groups-I and II were demonstrated to be potential targets of miR156. Synteny analysis showed that 7 paralogous gene pairs exist in HaSPL genes and 26 orthologous gene pairs exist between sunflower and rice, whereas 21 orthologous gene pairs were found between sunflower and Arabidopsis. Segmental duplication appears to have played a vital role in the expansion processes of sunflower SPL genes, and because of selection pressure, all duplicated genes have undergone purifying selection. Tissue-specific gene expression analysis of the HaSBP genes proved their diverse spatiotemporal expression patterns, which were predominantly expressed in floral organs and differentially expressed in stem, axil, and root tissues. The expression pattern of HaSPL genes under water stress showed broad involvement of HaSPLs in the response to flood and drought stresses. This genome-wide identification investigation provides detailed information on the sunflower SPL transcription factor gene family and establishes a strong platform for future research on sunflower responses to abiotic stress tolerance.
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Affiliation(s)
- Kundansing R Jadhao
- Department of Bioinformatics, MGM College of Agricultural Biotechnology, Aurangabad, 431007, India.
| | - Sonam S Kale
- Department of Plant Biotechnology, MGM College of Agricultural Biotechnology, Aurangabad, 431003, India
| | - Nilesh S Chavan
- Department of Microbiology and Environmental Biotechnology, MGM College of Agricultural Biotechnology, Aurangabad, 431003, India
| | - Pandharinath H Janjal
- Department of Bioinformatics, MGM College of Agricultural Biotechnology, Aurangabad, 431007, India
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Putti FF, de Queiroz Barcelos JP, Goes BC, Alves RF, Neto MM, da Silva AO, Filho LRAG, Zanetti WAL, de Souza AV. Effects of Water Deficit on Growth and Productivity in Tomato Crops Irrigated with Water Treated with Very Low-Frequency Electromagnetic Resonance Fields. PLANTS (BASEL, SWITZERLAND) 2023; 12:3721. [PMID: 37960077 PMCID: PMC10650588 DOI: 10.3390/plants12213721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 05/10/2023] [Accepted: 05/29/2023] [Indexed: 11/15/2023]
Abstract
The tomato crop is very sensitive to stress conditions. A water deficit is defined as when precipitation is less than the evapotranspiration (ETc) of the crop in a given period, and in this scenario of climate change, it is identified as responsible for global productivity losses. The use of potential technologies for better irrigation management, such as electromagnetically treated water, remains controversial. Thus, the objective of the present work was to investigate the effects of very low-frequency electromagnetic resonance field treatment on water for tomato crops submitted to different irrigation rates. For this, an experiment was carried out under controlled conditions with different types of water: electromagnetically treated water (WTVLF) and untreated water (UNW), as well as four water replacement rates: 40, 60, 80, and 100% ETc. The electromagnetic treatment of the water was carried out using the commercial equipment AQUA4D®. The experiment was carried out in pots with five replications per treatment. Lower activity of SOD, POD, CAT, and APX enzymes was observed in plants irrigated with water treated with very low-frequency electromagnetic resonance fields (WTVLF), indicating less oxidative stress caused by water deficit. Water deficit reduced chlorophyll content, but the effects were less harmful with WTVLF water. The water deficit resulted in less accumulation of dry matter and less productivity in a linear relationship. However, plants irrigated with WTVLF showed increments of about 20% in dry matter accumulation and 20% in fruit production concerning plants irrigated with untreated water, independent of the irrigation rates. We can conclude that irrigation with WTVLF can be a solution to reduce the damage caused by water deficits and increase the productivity of tomato crops.
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Affiliation(s)
- Fernando Ferrari Putti
- School of Sciences and Engineering, São Paulo State University (UNESP), Tupã 17602-496, SP, Brazil (L.R.A.G.F.); (A.V.d.S.)
| | | | - Bruno Cesar Goes
- Department of Agronomy, José do Rosário Vellano University (Unifenas), Alfenas 37132-440, MG, Brazil
| | - Renata Fernandes Alves
- School of Sciences and Engineering, São Paulo State University (UNESP), Tupã 17602-496, SP, Brazil (L.R.A.G.F.); (A.V.d.S.)
| | - Mário Mollo Neto
- School of Sciences and Engineering, São Paulo State University (UNESP), Tupã 17602-496, SP, Brazil (L.R.A.G.F.); (A.V.d.S.)
| | | | | | | | - Angela Vacaro de Souza
- School of Sciences and Engineering, São Paulo State University (UNESP), Tupã 17602-496, SP, Brazil (L.R.A.G.F.); (A.V.d.S.)
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37
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Inal B, Mirzapour M, Tufekci ED, Rustemoglu M, Kaba A, Albalawi MA, Alalawy AI, Sakran M, Alqurashi M, Ditta A. Drought-Induced miRNA Expression Correlated with Heavy Metal, Phenolic Acid, and Protein and Nitrogen Levels in Five Chickpea Genotypes. ACS OMEGA 2023; 8:35746-35754. [PMID: 37810661 PMCID: PMC10552140 DOI: 10.1021/acsomega.3c03003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 09/06/2023] [Indexed: 10/10/2023]
Abstract
Drought is a prime stress, drastically affecting plant growth, development, and yield. Plants have evolved various physiological, molecular, and biochemical mechanisms to cope with drought. Investigating specific biochemical pathways related to drought tolerance mechanisms of plants through biotechnology approaches is one of the quickest and most effective strategies for enhancing crop production. Among them, microRNAs (miRNAs) are the principal post-transcriptional regulators of gene expression in plants during plant growth under biotic and abiotic stresses. In this study, five different chickpea genotypes (İnci, Hasan bey, Arda, Seçkin, and Diyar 95) were grown under normal and drought stress. We recorded the expression levels of microRNAs in these genotypes and found differential expression (miRNA396, miR408, miRNA414, miRNA528, and miRNA1533) under contrasting conditions. Results revealed that miRNA414 and miRNA528 considerably increased in all genotypes under drought stress, and expression levels of miRNA418, miRNA1533, and miRNA396 (except for the Seçkin genotype) were found to be higher under the watered conditions. These genotypes were also investigated for heavy metal, phenolic acid, protein, and nitrogen concentrations under normal and drought stress conditions. The Arda genotype showed a significant increase in nitrogen (5.46%) and protein contents (28.3%), while protein contents were decreased in the Hasan bey and Seçkin genotypes subjected to drought stress. In the case of metals, iron was the most abundant element in all genotypes (İnci = 15.4 ppm, Hasan bey = 29.6 ppm, Seçkin = 37.8 ppm, Arda = 26.3 ppm, and Diyar 95 = 40.8 ppm) under normal conditions. Interestingly, these results were related to miRNA expression in the chickpea genotypes and hint at the regulation of multiple pathways under drought conditions. Overall, the present study will help us to understand the miRNA-mediated regulation of various pathways in chickpea genotypes.
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Affiliation(s)
- Behcet Inal
- Faculty
of Agriculture, Department of Agricultural Biotechnology, Siirt University, Siirt 56100, Turkey
| | - Mohsen Mirzapour
- Faculty
of Agriculture, Department of Agricultural Biotechnology, Siirt University, Siirt 56100, Turkey
| | - Ebru Derelli Tufekci
- Food
and Agriculture Vocational High School, Department of Field Crops, Cankiri Karatekin University, Cankiri 18100, Turkey
| | - Mustafa Rustemoglu
- Faculty
of Agriculture, Department of Plant Protection, Sirnak University, Sirnak 73000, Turkey
| | - Adem Kaba
- Faculty
of Agriculture, Department of Agricultural Biotechnology, Siirt University, Siirt 56100, Turkey
| | - Marzough Aziz Albalawi
- Department
of Chemistry, University College at Alwajh, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Adel I. Alalawy
- Department
of Biochemistry, Faculty of Science, University
of Tabuk, Tabuk 73000, Kingdom
of Saudi Arabia
| | - Mohamed Sakran
- Department
of Biochemistry, Faculty of Science, University
of Tabuk, Tabuk 73000, Kingdom
of Saudi Arabia
- Biochemistry
Section, Chemistry Department, Faculty of Science, Tanta University, Tanta31527,Egypt
| | - Mohammed Alqurashi
- Department
of Biotechnology, Faculty of Science, Taif
University, Taif 21974, Saudi Arabia
| | - Allah Ditta
- Department
of Environmental Sciences, Shaheed Benazir
Bhutto University Sheringal, Dir (U), Khyber Pakhtunkhwa 18000, Pakistan
- School
of Biological Sciences, The University of
Western Australia, 35
Stirling Highway, Perth, WA 6009, Australia
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38
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Galleguillos C, Acuña-Rodríguez IS, Torres-Díaz C, Gundel PE, Molina-Montenegro MA. Genetic control underlying the flowering-drought tolerance trade-off in the Antarctic plant Colobanthus quitensis. PLANT, CELL & ENVIRONMENT 2023; 46:3158-3169. [PMID: 37309267 DOI: 10.1111/pce.14645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 05/29/2023] [Accepted: 05/31/2023] [Indexed: 06/14/2023]
Abstract
Plants inhabiting environments with stressful conditions often exhibit a low number of flowers, which can be attributed to the energetic cost associated with reproduction. One of the most stressful environments for plants is the Antarctic continent, characterized by limited soil water availability and low temperatures. Induction of dehydrins like those from the COR gene family and auxin transcriptional response repressor genes (IAAs), which are involved in floral repression, has been described in response to water stress. Here, we investigated the relationship between the water deficit-induced stress response and the number of flowers in Colobanthus quitensis plants collected from populations along a latitudinal gradient. The expression levels of COR47 and IAA12 genes in response to water deficit were found to be associated with the number of flowers. The relationship was observed both in the field and growth chambers. Watering the plants in the growth chambers alleviated the stress and stimualted flowering, thereby eliminating the trade-off observed in the field. Our study provides a mechanistic understanding of the ecological constraints on plant reproduction along a water availability gradient. However, further experiments are needed to elucidate the primary role of water availability in regulating resource allocation to reproduction in plants inhibiting extreme environments.
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Affiliation(s)
- Carolina Galleguillos
- Centro de Ecología Integrativa, Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
| | - Ian S Acuña-Rodríguez
- Centro de Ecología Integrativa, Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
- Instituto de Investigaciones Interdisciplinarias (I3), Universidad de Talca, Talca, Chile
| | - Cristian Torres-Díaz
- Departamento de Ciencias Naturales, Laboratorio de Genómica y Biodiversidad (LGB), Universidad del Bío-Bío, Chillán, Chile
| | - Pedro E Gundel
- Centro de Ecología Integrativa, Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
- IFEVA (CONICET-Facultad de Agronomía, Universidad de Buenos Aires), Buenos Aires, Argentina
| | - Marco A Molina-Montenegro
- Centro de Ecología Integrativa, Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
- Centro de Investigación en Estudios Avanzados del Maule (CIEAM), Universidad Católica del Maule, Talca, Chile
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Abd El-Mageed TA, Ihab R, Rady MM, Belal HEE, Mostafa FA, Galal TM, Masoudi LMA, Ali EF, Roulia M, Mahmoud AEM. A Novel Nutrient- and Antioxidant-Based Formulation Can Sustain Tomato Production under Full Watering and Drought Stress in Saline Soil. PLANTS (BASEL, SWITZERLAND) 2023; 12:3407. [PMID: 37836147 PMCID: PMC10574430 DOI: 10.3390/plants12193407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/23/2023] [Accepted: 09/26/2023] [Indexed: 10/15/2023]
Abstract
As a result of the climate changes that are getting worse nowadays, drought stress (DS) is a major obstacle during crop life stages, which ultimately reduces tomato crop yields. So, there is a need to adopt modern approaches like a novel nutrient- and antioxidant-based formulation (NABF) for boosting tomato crop productivity. NABF consists of antioxidants (i.e., citric acid, salicylic acid, ascorbic acid, glutathione, and EDTA) and nutrients making it a fruitful growth stimulator against environmental stressors. As a first report, this study was scheduled to investigate the foliar application of NABF on growth and production traits, physio-biochemical attributes, water use efficiency (WUE), and nutritional, hormonal, and antioxidative status of tomato plants cultivated under full watering (100% of ETc) and DS (80 or 60% of ETc). Stressed tomato plants treated with NABF had higher DS tolerance through improved traits of photosynthetic efficiency, leaf integrity, various nutrients (i.e., copper, zinc, manganese, calcium, potassium, phosphorus, and nitrogen), and hormonal contents. These positives were a result of lower levels of oxidative stress biomarkers as a result of enhanced osmoprotectants (soluble sugars, proline, and soluble protein), and non-enzymatic and enzymatic antioxidant activities. Growth, yield, and fruit quality traits, as well as WUE, were improved. Full watering with application of 2.5 g NABF L-1 collected 121 t tomato fruits per hectare as the best treatment. Under moderate DS (80% of ETc), NABF application increased fruit yield by 10.3%, while, under severe DS (40% of ETc), the same fruit yield was obtained compared to full irrigation without NABF. Therefore, the application of 60% ETc × NABF was explored to not only give a similar yield with higher quality compared to 100% ETc without NABF as well as increase WUE.
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Affiliation(s)
- Taia A. Abd El-Mageed
- Soil and Water Science Department, Faculty of Agriculture, Fayoum University, Fayoum 63514, Egypt;
| | - Radwa Ihab
- Botany Department, Faculty of Agriculture, Fayoum University, Fayoum 63514, Egypt; (R.I.); (H.E.E.B.)
| | - Mostafa M. Rady
- Botany Department, Faculty of Agriculture, Fayoum University, Fayoum 63514, Egypt; (R.I.); (H.E.E.B.)
| | - Hussein E. E. Belal
- Botany Department, Faculty of Agriculture, Fayoum University, Fayoum 63514, Egypt; (R.I.); (H.E.E.B.)
| | - Fatma A. Mostafa
- Plant Pathology Research Institute, Agriculture Research Center, Giza 11571, Egypt;
| | - Tarek M. Galal
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (T.M.G.); (L.M.A.M.)
| | - Luluah M. Al Masoudi
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (T.M.G.); (L.M.A.M.)
| | - Esmat F. Ali
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (T.M.G.); (L.M.A.M.)
| | - Maria Roulia
- Inorganic Chemistry Laboratory, Department of Chemistry, National and Kapodistrian University of Athens, 157 72 Athens, Greece
| | - Amr E. M. Mahmoud
- Biochemistry Department, Faculty of Agriculture, Fayoum University, Fayoum 63514, Egypt;
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Nguyen NN, Lamotte O, Alsulaiman M, Ruffel S, Krouk G, Berger N, Demolombe V, Nespoulous C, Dang TMN, Aimé S, Berthomieu P, Dubos C, Wendehenne D, Vile D, Gosti F. Reduction in PLANT DEFENSIN 1 expression in Arabidopsis thaliana results in increased resistance to pathogens and zinc toxicity. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:5374-5393. [PMID: 37326591 DOI: 10.1093/jxb/erad228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 06/14/2023] [Indexed: 06/17/2023]
Abstract
Ectopic expression of defensins in plants correlates with their increased capacity to withstand abiotic and biotic stresses. This applies to Arabidopsis thaliana, where some of the seven members of the PLANT DEFENSIN 1 family (AtPDF1) are recognised to improve plant responses to necrotrophic pathogens and increase seedling tolerance to excess zinc (Zn). However, few studies have explored the effects of decreased endogenous defensin expression on these stress responses. Here, we carried out an extensive physiological and biochemical comparative characterization of (i) novel artificial microRNA (amiRNA) lines silenced for the five most similar AtPDF1s, and (ii) a double null mutant for the two most distant AtPDF1s. Silencing of five AtPDF1 genes was specifically associated with increased aboveground dry mass production in mature plants under excess Zn conditions, and with increased plant tolerance to different pathogens - a fungus, an oomycete and a bacterium, while the double mutant behaved similarly to the wild type. These unexpected results challenge the current paradigm describing the role of PDFs in plant stress responses. Additional roles of endogenous plant defensins are discussed, opening new perspectives for their functions.
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Affiliation(s)
- Ngoc Nga Nguyen
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Olivier Lamotte
- Agroécologie, CNRS, INRAE, Institut Agro, Université de Bourgogne, Université Bourgogne-Franche Comté, F-21 000 Dijon, France
| | - Mohanad Alsulaiman
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Sandrine Ruffel
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Gabriel Krouk
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Nathalie Berger
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Vincent Demolombe
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Claude Nespoulous
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Thi Minh Nguyet Dang
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Sébastien Aimé
- Agroécologie, CNRS, INRAE, Institut Agro, Université de Bourgogne, Université Bourgogne-Franche Comté, F-21 000 Dijon, France
| | - Pierre Berthomieu
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Christian Dubos
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - David Wendehenne
- Agroécologie, CNRS, INRAE, Institut Agro, Université de Bourgogne, Université Bourgogne-Franche Comté, F-21 000 Dijon, France
| | - Denis Vile
- LEPSE, INRAE, Institut Agro, Université de Montpellier, 2 Place P. Viala, F-34 060 Montpellier Cedex 2, France
| | - Françoise Gosti
- IPSiM, CNRS, INRAE, Institut Agro, Université de Montpellier, 2, Place P. Viala, F-34 060 Montpellier Cedex 2, France
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41
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Zhou H, Ashworth K, Dodd IC. Exogenous monoterpenes mitigate H2O2-induced lipid damage but do not attenuate photosynthetic decline during water deficit in tomato. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:5327-5340. [PMID: 37279582 PMCID: PMC10498030 DOI: 10.1093/jxb/erad219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 06/02/2023] [Indexed: 06/08/2023]
Abstract
Although monoterpenes are suggested to mediate oxidative status, their role in abiotic stress responses is currently unclear. Here, a foliar spray of monoterpenes increased antioxidant capacity and decreased oxidative stress of Solanum lycopersicum under water deficit stress. The foliar content of monoterpenes increased with spray concentration indicating foliar uptake of exogenous monoterpenes. Exogenous monoterpene application substantially decreased foliar accumulation of hydrogen peroxide (H2O2) and lipid peroxidation (malondialdehyde). However, it appears that monoterpenes prevent the accumulation of reactive oxygen species rather than mitigating subsequent reactive oxygen species-induced damage. Low spray concentration (1.25 mM) proved most effective in decreasing oxidative stress but did not up-regulate the activity of key antioxidant enzymes (superoxide dismutase and ascorbate peroxidase) even though higher (2.5 and 5 mM) spray concentrations did, suggesting a complex role for monoterpenes in mediating antioxidant processes. Furthermore, soil drying caused similar photosynthetic limitations in all plants irrespective of monoterpene treatments, apparently driven by strong reductions in stomatal conductance as photosystem II efficiency only decreased in very dry soil. We suggest that exogenous monoterpenes may mitigate drought-induced oxidative stress by direct quenching and/or up-regulating endogenous antioxidative processes. The protective properties of specific monoterpenes and endogenous antioxidants require further investigation.
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Affiliation(s)
- Hao Zhou
- Lancaster Environment Centre, Lancaster University, Library Avenue, Lancaster LA1 4YQ, UK
| | - Kirsti Ashworth
- Lancaster Environment Centre, Lancaster University, Library Avenue, Lancaster LA1 4YQ, UK
| | - Ian C Dodd
- Lancaster Environment Centre, Lancaster University, Library Avenue, Lancaster LA1 4YQ, UK
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42
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Hartill GE, Blackman CJ, Halliwell B, Jones RC, Holland BR, Brodribb TJ. Cold temperature and aridity shape the evolution of drought tolerance traits in Tasmanian species of Eucalyptus. TREE PHYSIOLOGY 2023; 43:1493-1500. [PMID: 37208009 PMCID: PMC10493950 DOI: 10.1093/treephys/tpad065] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 04/18/2023] [Accepted: 05/15/2023] [Indexed: 05/21/2023]
Abstract
Perennial plant species from water-limiting environments (including climates of extreme drought, heat and freezing temperatures) have evolved traits that allow them to tolerate these conditions. As such, traits that are associated with water stress may show evidence of adaptation to climate when compared among closely related species inhabiting contrasting climatic conditions. In this study, we tested whether key hydraulic traits linked to drought stress, including the vulnerability of leaves to embolism (P50 leaf) and the minimum diffusive conductance of shoots (gmin), were associated with climatic characteristics of 14 Tasmanian eucalypt species from sites that vary in precipitation and temperature. Across species, greater cavitation resistance (more negative P50 leaf) was associated with increasing aridity and decreasing minimum temperature. By contrast, gmin showed strong associations with aridity only. Among these Tasmanian eucalypts, evidence suggests that trait variation is influenced by both cold and dry conditions, highlighting the need to consider both aspects when exploring adaptive trait-climate relationships.
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Affiliation(s)
- Gabrielle E Hartill
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, College of Sciences and Engineering, School of Natural Sciences, University of Tasmania, Churchill Avenue, Sandy Bay, TAS, Australia
| | - Chris J Blackman
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, College of Sciences and Engineering, School of Natural Sciences, University of Tasmania, Churchill Avenue, Sandy Bay, TAS, Australia
| | - Benjamin Halliwell
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, College of Sciences and Engineering, School of Natural Sciences, University of Tasmania, Churchill Avenue, Sandy Bay, TAS, Australia
| | - Rebecca C Jones
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, College of Sciences and Engineering, School of Natural Sciences, University of Tasmania, Churchill Avenue, Sandy Bay, TAS, Australia
| | - Barbara R Holland
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, College of Sciences and Engineering, School of Natural Sciences, University of Tasmania, Churchill Avenue, Sandy Bay, TAS, Australia
| | - Timothy J Brodribb
- ARC Centre of Excellence for Plant Success in Nature and Agriculture, College of Sciences and Engineering, School of Natural Sciences, University of Tasmania, Churchill Avenue, Sandy Bay, TAS, Australia
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43
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Silvestre-Carbonell S, Ogaya R, Fernández-Martínez M, Peñuelas J. Chlorophyll fluorescence variation in two Mediterranean forest species over a 21-year drought treatment period. TREE PHYSIOLOGY 2023; 43:1533-1547. [PMID: 37145498 DOI: 10.1093/treephys/tpad059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 04/20/2023] [Accepted: 05/01/2023] [Indexed: 05/06/2023]
Abstract
The Mediterranean is among the regions predicted to be most affected by climate change due to rising temperatures and increasing frequency as well as intensity of extreme weather events, such as drought. These shifts in climatic conditions might lead to changes in species community composition by enabling the increase of drought-tolerant species at the expense of less tolerant ones. This hypothesis was tested in the current study using chlorophyll fluorescence data from a 21-year precipitation exclusion experiment in a Mediterranean forest for two co-dominant Quercus ilex L. and Phillyrea latifolia L. species with contrasting low and high levels of drought tolerance, respectively. The maximum potential quantum efficiency of photosystem II (PSII) (Fv/Fm), photochemical efficiency of PSII (yield) and non-photochemical quenching (NPQ) varied seasonally. The Fv/Fm and NPQ levels were positively correlated with air temperature and standardized precipitation-evapotranspiration index (SPEI), whereas yield, which was greater under drought treatment, was negatively associated with vapor pressure deficit and SPEI. The Fv/Fm values showed similar increase in the two species over the 21-year study period regardless of treatment and in parallel to progressive warming. By contrast, yield values were higher in Q. ilex than in P. latifolia, while NPQ values were higher in P. latifolia than in Q. ilex. Notably, high yield values were also observed in the drought-treated plots. Throughout the study, plants in the drought-treated plots exhibited decreased basal area, leaf biomass and aerial cover due to high stem mortality. In addition, a continuous increase in temperature was detected in summer and autumn, which might explain the observed increase in Fv/Fm values over the study period. Higher yield and lower NPQ detected in Q. ilex could be attributed to less competition for resources in the drought-treated plots and acclimation of Q. ilex plants over the study period. Our results indicate that reduction in stem density could improve forest resilience to climate change-induced drought conditions.
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Affiliation(s)
- Susana Silvestre-Carbonell
- CREAF, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Catalonia E081193, Spain
- CREAF, Cerdanyola del Vallès, Catalonia E08193, Spain
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Cerdanyola del Vallès, Barcelona, Catalonia E08193, Spain
| | - Romà Ogaya
- CREAF, Cerdanyola del Vallès, Catalonia E08193, Spain
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Cerdanyola del Vallès, Barcelona, Catalonia E08193, Spain
| | - Marcos Fernández-Martínez
- CREAF, Cerdanyola del Vallès, Catalonia E08193, Spain
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Cerdanyola del Vallès, Barcelona, Catalonia E08193, Spain
- BEECA-UB, Department of Evolutionary Biology, Ecology and Environmental Sciences, University of Barcelona, Barcelona, Catalonia E08028, Spain
| | - Josep Peñuelas
- CREAF, Cerdanyola del Vallès, Catalonia E08193, Spain
- CSIC, Global Ecology Unit, CREAF-CSIC-UAB, Cerdanyola del Vallès, Barcelona, Catalonia E08193, Spain
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Li J, Meng L, Ren S, Jia C, Liu R, Jiang H, Chen J. OsGSTU17, a Tau Class Glutathione S-Transferase Gene, Positively Regulates Drought Stress Tolerance in Oryza sativa. PLANTS (BASEL, SWITZERLAND) 2023; 12:3166. [PMID: 37687412 PMCID: PMC10490428 DOI: 10.3390/plants12173166] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023]
Abstract
As a great threat to the normal growth of rice, drought not only restricts the growth of rice, but also affects its yield. Glutathione S-transferases (GSTs) have antioxidant and detoxification functions. In rice, GSTs can not only effectively cope with biological stress, but also play a defense role against abiotic stress. In this study, we selected OsGSTU17, a member gene that was induced by drought, to explore the role of GSTs and analyze their physiological mechanisms that are involved in rice drought tolerance. With the CRISPR/Cas9 knockout system techniques, we obtained two independent mutant lines of osgstu17. After 14 days of drought stress treatment, and then re-supply of the water for 10 days, the survival rate of the osgstu17 mutant lines was significantly reduced compared to the wild-type (WT). Similarly, with the 10% (w/v) PEG6000 hydroponics experiment at the seedling stage, we also found that compared with the WT, the shoot and root biomass of osgstu17 mutant lines decreased significantly. In addition, both the content of the MDA and H2O2, which are toxic to plants, increased in the osgtu17 mutant lines. On the other hand, chlorophyll and proline decreased by about 20%. The activity of catalase and superoxide dismutase, which react with peroxides, also decreased by about 20%. Under drought conditions, compared with the WT, the expressions of the drought stress-related genes OsNAC10, OsDREB2A, OsAP37, OsP5CS1, OsRAB16C, OsPOX1, OsCATA, and OsCATB in the osgtu17 mutant lines were significantly decreased. Finally, we concluded that knocking out OsGSTU17 significantly reduced the drought tolerance of rice; OsGSTU17 could be used as a candidate gene for rice drought-tolerant cultivation. However, the molecular mechanism of OsGSTU17 involved in rice drought resistance needs to be further studied.
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Affiliation(s)
- Jinyan Li
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (J.L.); (S.R.); (C.J.)
| | - Lijun Meng
- Kunpeng Institute of Modern Agriculture at Foshan, Foshan 528225, China;
| | - Shuohan Ren
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (J.L.); (S.R.); (C.J.)
| | - Chunying Jia
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (J.L.); (S.R.); (C.J.)
| | - Ruifang Liu
- The High School Affiliated to Renmin University of China, Shenzhen 518119, China;
| | - Hongzhen Jiang
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (J.L.); (S.R.); (C.J.)
| | - Jingguang Chen
- School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China; (J.L.); (S.R.); (C.J.)
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Shehzad MA, Hussain I, Akhtar G, Ahmad KS, Nawaz F, Faried HN, Mehmood A. Insights into physiological and metabolic modulations instigated by exogenous sodium nitroprusside and spermidine reveals drought tolerance in Helianthus annuus L. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 202:107935. [PMID: 37579683 DOI: 10.1016/j.plaphy.2023.107935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/11/2023] [Accepted: 08/02/2023] [Indexed: 08/16/2023]
Abstract
Drought is the most critical climatic factor instigating severe threats to crop production worldwide. As stress ameliorants, exogenous sodium nitroprusside (SNP) or spermidine (Spd) supply has positive responses in alleviating the drought adversities in crops, however, reports regarding their combined effects is still elusive. Here, the protective role of SNP and Spd to confer drought resistance in sunflower (Helianthus annuus L.) through up-regulation of physiological and metabolic processes was investigated. Plants were foliar sprayed with individual or combined SNP (100 μM) or Spd (100 μM). Drought was induced by keeping the soil at 100% (normal) and 60% (drought stress) field capacity levels. Drought exposure caused a marked decline in relative water content (RWC), excised leaf water retention (ELWR), net photosynthesis (PN), transpiration rate (E), stomatal conductance (gs), and sub-stomatal conductance (Ci) with substantial increase in catalase (CAT), superoxide dismutase (SOD), and peroxidase (POX). SNP plus Spd exhibited a considerable increase in CAT, SOD, and POX activities under drought, and helped the plants to retain optimum water status and gas exchange attributes. Similarly, hydrogen peroxide (H2O2) and malondialdehyde (MDA) contents were increased significantly to drought; however, a notable decline was recorded in drought prone plants treated with exogenous SNP plus Spd. Moreover, addition of SNP plus Spd under drought caused a remarkable increase in chlorophyll a (Chl a), chlorophyll b (Chl b), chlorophyll total (Chl t), carotenoids (Car), and growth traits like shoot length (SL), root length (RL), shoot fresh weight (SFW), shoot dry weight (SDW), root dry weight (RDW). Combined SNP and Spd application could potentially alleviate the drought-induced damages in sunflower through increased water status (8-10%), antioxidant enzymes (17-28%), chlorophyll pigments (14-21%), and growth performance (12-22%) under drought stress.
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Affiliation(s)
- Muhammad Asif Shehzad
- Institute of Plant Breeding and Biotechnology, Muhammad Nawaz Shareef University of Agriculture, Multan, 66000, Pakistan.
| | - Israr Hussain
- Department of Agronomy, Muhammad Nawaz Shareef University of Agriculture, Multan, 66000, Pakistan
| | - Gulzar Akhtar
- Department of Horticulture, Muhammad Nawaz Shareef University of Agriculture, Multan, 66000, Pakistan
| | - Khawaja Shafique Ahmad
- Department of Botany, University of Poonch Rawalakot (UPR), 12350, Azad Jammu and Kashmir, Pakistan.
| | - Fahim Nawaz
- Research School of Biology, Australian National University, Canberra, Australian Capital Territory 2601, Australia
| | - Hafiz Nazar Faried
- Department of Horticulture, Muhammad Nawaz Shareef University of Agriculture, Multan, 66000, Pakistan
| | - Ansar Mehmood
- Department of Botany, University of Poonch Rawalakot (UPR), 12350, Azad Jammu and Kashmir, Pakistan
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Patel M, Islam S, Husain FM, Yadav VK, Park HK, Yadav KK, Bagatharia S, Joshi M, Jeon BH, Patel A. Bacillus subtilis ER-08, a multifunctional plant growth-promoting rhizobacterium, promotes the growth of fenugreek ( Trigonella foenum-graecum L.) plants under salt and drought stress. Front Microbiol 2023; 14:1208743. [PMID: 37692403 PMCID: PMC10483830 DOI: 10.3389/fmicb.2023.1208743] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 07/31/2023] [Indexed: 09/12/2023] Open
Abstract
Introduction Sustainable agriculture and meeting the world's food needs face considerable obstacles from abiotic stresses such as soil salinity and drought. This critical issue was addressed by our current study, which sought to uncover multi-trait bioinoculants from hostile ecosystems that could help mitigate salinity and drought stresses at the same time. Methods The Bacillus subtilis ER-08 (BST) strain was isolated from the halotolerant plant Fagonia cretica which was collected from the Little Rann of Kachchh, India. Various biochemical and molecular approaches were applied for the detailed characterization of the BST isolate. Results and discussion The BST isolate demonstrated notable plant growth-promoting qualities. Fenugreek seed biopriming was performed using the BST isolate. The effect of BST seed treatment on fenugreek developmental indices as well as abiotic alleviation was examined under greenhouse conditions. The BST produced 83.7 g ml-1 gibberellins (GA3) and 176.1 g ml-1 indole-3 acetic acid. Moreover, hydrogen cyanide, siderophore, exopolysaccharides (EPS), ammonia, cellulase, protease, pectinase, and chitinase were also produced by the BST strain. Interestingly, 52% of Fusarium oxysporum mycelial growth was suppressed by the BST isolate under in vitro conditions. Furthermore, BST isolates functioned well under several abiotic stress conditions, for instance, salinity (4 and 6 ds m-1), pH (5, 7, and 9), drought (PEG6000 at 10%, 20%, and 30%), and temperature (25°C, 35°C, 37°C, and 55°C). This study indicates that the BST strain might serve as an effective bio-inoculant for minimizing the detrimental effects of abiotic stresses.
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Affiliation(s)
- Margi Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
| | - Shaikhul Islam
- Bangladesh Agricultural Research Council, Dhaka, Bangladesh
| | - Fohad Mabood Husain
- Department of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Virendra Kumar Yadav
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
| | - Hyun-Kyung Park
- Department of Pediatrics, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Ratibad, Bhopal, India
- Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Thi-Qar, Nasiriyah, Iraq
| | - Snehal Bagatharia
- Gujarat State Biotechnology Mission (GSBTM), Gandhinagar, Gujarat, India
| | - Madhvi Joshi
- Gujarat Biotechnology Research Centre (GBRC), Gandhinagar, Gujarat, India
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, Republic of Korea
| | - Ashish Patel
- Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
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Byrt CS, Zhang RY, Magrath I, Chan KX, De Rosa A, McGaughey S. Exploring aquaporin functions during changes in leaf water potential. FRONTIERS IN PLANT SCIENCE 2023; 14:1213454. [PMID: 37615024 PMCID: PMC10442719 DOI: 10.3389/fpls.2023.1213454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/04/2023] [Indexed: 08/25/2023]
Abstract
Maintenance of optimal leaf tissue humidity is important for plant productivity and food security. Leaf humidity is influenced by soil and atmospheric water availability, by transpiration and by the coordination of water flux across cell membranes throughout the plant. Flux of water and solutes across plant cell membranes is influenced by the function of aquaporin proteins. Plants have numerous aquaporin proteins required for a multitude of physiological roles in various plant tissues and the membrane flux contribution of each aquaporin can be regulated by changes in protein abundance, gating, localisation, post-translational modifications, protein:protein interactions and aquaporin stoichiometry. Resolving which aquaporins are candidates for influencing leaf humidity and determining how their regulation impacts changes in leaf cell solute flux and leaf cavity humidity is challenging. This challenge involves resolving the dynamics of the cell membrane aquaporin abundance, aquaporin sub-cellular localisation and location-specific post-translational regulation of aquaporins in membranes of leaf cells during plant responses to changes in water availability and determining the influence of cell signalling on aquaporin permeability to a range of relevant solutes, as well as determining aquaporin influence on cell signalling. Here we review recent developments, current challenges and suggest open opportunities for assessing the role of aquaporins in leaf substomatal cavity humidity regulation.
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Arab MM, Askari H, Aliniaeifard S, Mokhtassi-Bidgoli A, Estaji A, Sadat-Hosseini M, Sohrabi SS, Mesgaran MB, Leslie CA, Brown PJ, Vahdati K. Natural variation in photosynthesis and water use efficiency of locally adapted Persian walnut populations under drought stress and recovery. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107859. [PMID: 37406405 DOI: 10.1016/j.plaphy.2023.107859] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 06/17/2023] [Accepted: 06/21/2023] [Indexed: 07/07/2023]
Abstract
Persian walnut is a drought-sensitive species with considerable genetic variation in the photosynthesis and water use efficiency of its populations, which is largely unexplored. Here, we aimed to elucidate changes in the efficiency of photosynthesis and water content using a diverse panel of 60 walnut families which were submitted to a progressive drought for 24 days, followed by two weeks of re-watering. Severe water-withholding reduced leaf relative water content (RWC) by 20%, net photosynthetic rate (Pn) by 50%, stomatal conductance (gs) by 60%, intercellular CO2 concentration (Ci) by 30%, and transpiration rate (Tr) by 50%, but improved water use efficiency (WUE) by 25%. Severe water-withholding also inhibited photosystem II functionality as indicated by reduced quantum yield of intersystem electron transport (φEo) and transfer of electrons per reaction center (ET0/RC), also enhanced accumulation of QA (VJ) resulted in the reduction of the photosynthetic performance (PIABS) and maximal quantum yield of PSII (FV/FM); while elevated quantum yield of energy dissipation (φDo), energy fluxes for absorption (ABS/RC) and dissipated energy flux (DI0/RC) in walnut families. Cluster analysis classified families into three main groups (tolerant, moderately tolerant, and sensitive), with the tolerant group from dry climates exhibiting lesser alterations in assessed parameters than the other groups. Multivariate analysis of phenotypic data demonstrated that RWC and biophysical parameters related to the chlorophyll fluorescence such as FV/FM, φEo, φDo, PIABS, ABS/RC, ET0/RC, and DI0/RC represent fast, robust and non-destructive biomarkers for walnut performance under drought stress. Finally, phenotype-environment association analysis showed significant correlation of some photosynthetic traits with geoclimatic factors, suggesting a key role of climate and geography in the adaptation of walnut to its habitat conditions.
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Affiliation(s)
- Mohammad M Arab
- Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran.
| | - Hossein Askari
- Department of Plant Sciences and Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran.
| | - Sasan Aliniaeifard
- Photosynthesis Laboratory, Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran.
| | - Ali Mokhtassi-Bidgoli
- Department of Agronomy, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran.
| | - Ahmad Estaji
- Department of Horticultural Sciences, Faculty of Agriculture, University of Vali-E-Asr, Rafsanjan, Iran.
| | | | - Seyed Sajad Sohrabi
- Department of Plant Production and Genetic Engineering, Faculty of Agriculture, Lorestan University, Khorramabad, Iran.
| | - Mohsen B Mesgaran
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA.
| | - Charles A Leslie
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA.
| | - Patrick J Brown
- Department of Plant Sciences, University of California, Davis, CA, 95616, USA.
| | - Kourosh Vahdati
- Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran.
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El-aty MSA, Abo-youssef MI, Bahgt MM. Genetic diversity Analysis using molecular markers of some rice varieties for Physiological, biochemical and yield Traits under water deficit condition.. [DOI: 10.21203/rs.3.rs-3111398/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
Rice is a major staple food crop all over the world. Recent climate change trends forecast an increase in drought severity, necessitating the creation of novel drought-tolerant rice cultivars in order to continue rice production in this ecosystem. This study was carried out at the experimental farm of the rice research and training center (RRTC) using the randomized complete block design (RCBD) to assess the impact of water scarcity on eight rice varieties by identifying differences in physiological and biochemical responses among drought-sensitive and resistant rice varieties, in addition applying two PCR-based molecular marker systems ISSR and SCoT to assess the genetic diversity among the studied rice varieties. The results revealed that, Water shortage stress significantly reduced relative water content, total chlorophyll content, grain yield, and yield characteristics. while, it significantly raised proline content and antioxidant enzyme activity (CAT, APX, and SOD). The combined analysis of variance demonstrated that the mean squares for environments, varieties, and their interaction were highly significant for all investigated traits, suggesting that the germplasm used in the study had significant genetic diversity from one environment (normal irrigation) to another (water deficit) and could rank differently in both of them. Mean performance data showed that, Puebla and Hispagran varieties were selected as the most favourable varieties for most physiological and biochemical parameters studied, as well as yield traits which recorded the highest desirable values under both irrigation treatments. They were recommended for use in rice hybrid breeding programmes for water scarcity tolerance. Genetic Similarity and Cluster Analysis revealed that, the both molecular markers exhibited comparable genetic diversity values but a higher level of polymorphism was represented by ISSR. This indicates the high efficiency of both markers in discriminating the tested varieties. The dendrogram generated by ISSR and SCoT markers combined data divided the varieties into two major clusters. Cluster I consisted of the genotype Sakha 106. Cluster II retained seven varieties, which were further divided into two sub-clusters; Sakha 101, Sakha 105, Sakha 106, Sakha 107 constituted the first subgroup, while Giza 177, Hispagran, and Puebla formed the second one.
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Jiang S, Tang Y, Fan R, Bai S, Wang X, Huang Y, Li W, Ji W. Response of Carex breviculmis to phosphorus deficiency and drought stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1203924. [PMID: 37496859 PMCID: PMC10366378 DOI: 10.3389/fpls.2023.1203924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 06/26/2023] [Indexed: 07/28/2023]
Abstract
Introduction The drought and phosphorus deficiency have inevitably become environmental issues globally in the future. The analysis of plants functional trait variation and response strategies under the stress of phosphorus deficiency and drought is important to explore their ability to respond to potential ecological stress. Methods In this study, Carex breviculmis was selected as the research object, and a 14-week pot experiment was conducted in a greenhouse, with two phosphorus treatment (add 0.5mmol/L or 0.05μmol/L phosphorus) and four drought treatment (add 0-5%PEG6000), totaling eight treatments. Biomass allocation characteristics, leaf anatomical characteristics, biochemical parameters, root morphology, chemical element content, and photosynthetic parameters were measured. Results The results showed that the anatomical characteristics, chemical elements, and photosynthetic parameters of Carex breviculmis responded more significantly to main effect of phosphorus deficiency. Stomatal width, leaf phosphorus content and maximum net photosynthetic rate decreased by 11.38%, 59.39%, 38.18% significantly (p<0.05), while the change in biomass was not significant (p>0.05). Biomass allocation characteristics and root morphology responded more significantly to main effect of drought. Severe drought significantly decreased leaf fresh weight by 61% and increased root shoot ratio by 223.3% compared to the control group (p<0.05). The combined effect of severe drought and phosphorus deficiency produced the highest leaf N/P ratio (291.1% of the control) and MDA concentration (243.6% of the control). Correlation analysis and redundancy analysis showed that the contributions of phosphorus and drought to functional trait variation were similar. Lower epidermal cell thickness was positively correlated with maximum net photosynthetic rate, leaf phosphorus, chlorophyll ab, and leaf fresh weight (p<0.05). Discussion In terms of response strategy, Carex breviculmis was affected at the microscopic level under phosphorus deficiency stress, but could maintain the aboveground and underground biomass well through a series of mechanisms. When affected by drought, it adopted the strategy of reducing leaf yield and improving root efficiency to maintain life activities. Carex breviculmis could maintain its traits well under low phosphorus and moderate drought, or better conditions. So it may have good ecological service potential in corresponding areas if promoted. This study also provided a reference for plant response to combined drought and phosphorus deficiency stresses.
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Affiliation(s)
- Songlin Jiang
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Yiqing Tang
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Rong Fan
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Shidong Bai
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Xiaoqi Wang
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Yulin Huang
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Weizhong Li
- College of Forestry, Northwest A&F University, Yangling, China
| | - Wenli Ji
- College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
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