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Tang C, Zhang Y, Liu X, Zhang B, Si J, Xia H, Fan S, Kong L. Nitrate Starvation Induces Lateral Root Organogenesis in Triticum aestivum via Auxin Signaling. Int J Mol Sci 2024; 25:9566. [PMID: 39273513 PMCID: PMC11395443 DOI: 10.3390/ijms25179566] [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: 07/27/2024] [Revised: 08/31/2024] [Accepted: 09/01/2024] [Indexed: 09/15/2024] Open
Abstract
The lateral root (LR) is an essential component of the plant root system, performing important functions for nutrient and water uptake in plants and playing a pivotal role in cereal crop productivity. Nitrate (NO3-) is an essential nutrient for plants. In this study, wheat plants were grown in 1/2 strength Hoagland's solution containing 5 mM NO3- (check; CK), 0.1 mM NO3- (low NO3-; LN), or 0.1 mM NO3- plus 60 mg/L 2,3,5-triiodobenzoic acid (TIBA) (LNT). The results showed that LN increased the LR number significantly at 48 h after treatment compared with CK, while not increasing the root biomass, and LNT significantly decreased the LR number and root biomass. The transcriptomic analysis showed that LN induced the expression of genes related to root IAA synthesis and transport and cell wall remodeling, and it was suppressed in the LNT conditions. A physiological assay revealed that the LN conditions increased the activity of IAA biosynthesis-related enzymes, the concentrations of tryptophan and IAA, and the activity of cell wall remodeling enzymes in the roots, whereas the content of polysaccharides in the LRP cell wall was significantly decreased compared with the control. Fourier-transform infrared spectroscopy and atomic microscopy revealed that the content of cell wall polysaccharides decreased and the cell wall elasticity of LR primordia (LRP) increased under the LN conditions. The effects of LN on IAA synthesis and polar transport, cell wall remodeling, and LR development were abolished when TIBA was applied. Our findings indicate that NO3- starvation may improve auxin homeostasis and the biological properties of the LRP cell wall and thus promote LR initiation, while TIBA addition dampens the effects of LN on auxin signaling, gene expression, physiological processes, and the root architecture.
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Affiliation(s)
- Chengming Tang
- College of Life Science, Shandong Normal University, Jinan 250014, China
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Yunxiu Zhang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Xiao Liu
- College of Life Science, Shandong Normal University, Jinan 250014, China
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Bin Zhang
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Jisheng Si
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Haiyong Xia
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Shoujin Fan
- College of Life Science, Shandong Normal University, Jinan 250014, China
| | - Lingan Kong
- College of Life Science, Shandong Normal University, Jinan 250014, China
- Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
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Amalraj A, Baumann U, Hayes JE, Sutton T. Using RNA sequencing to unravel molecular changes underlying the defense response in chickpea induced by Phytophthora medicaginis. PHYSIOLOGIA PLANTARUM 2024; 176:e14412. [PMID: 38952339 DOI: 10.1111/ppl.14412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/16/2024] [Accepted: 05/26/2024] [Indexed: 07/03/2024]
Abstract
Phytophthora root rot (PRR), caused by Phytophthora medicaginis, is a major soil-borne disease of chickpea in Australia. Breeding for PRR resistance is an effective approach to avoid significant yield loss. Genetic resistance has been identified in cultivated chickpea (Cicer arietinum) and in the wild relative C. echinospermum, with previous studies identifying independent genetic loci associated with each of these sources. However, the molecular mechanisms associated with PRR resistance are not known. RNA sequencing analysis employed in this study identified changes in gene expression in roots of three chickpea genotypes grown hydroponically, early post-infection with P. medicaginis zoospores. Analyses of differentially expressed genes (DEG) identified the activation of a higher number of non-specific R-genes in a PRR-susceptible variety than in the resistant genotypes, suggesting a whole plant resistance response occurring in chickpea against the pathogen. Contrasting molecular changes in signaling profiles, proteolysis and transcription factor pathways were observed in the cultivated and wild Cicer-derived resistant genotypes. DEG patterns supported a hypothesis that increased root elongation and reduced adventitious root formation limit the pathogen entry points in the genotype containing the wild Cicer source of PRR resistance. Candidate resistance genes, including an aquaporin and a maltose transporter in the wild Cicer source and GDSL esterases/lipases in the cultivated source of resistance, were oppositely regulated. Increased knowledge of these genes and pathways will improve our understanding of molecular mechanisms controlling PRR resistance in chickpea, and support the development of elite chickpea varieties through molecular breeding approaches.
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Affiliation(s)
- Amritha Amalraj
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, SA, Australia
| | - Ute Baumann
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, SA, Australia
| | - Julie E Hayes
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, SA, Australia
| | - Tim Sutton
- Waite Research Institute, School of Agriculture, Food and Wine, University of Adelaide, SA, Australia
- South Australian Research and Development Institute (SARDI), SA, Australia
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Zou Z, Zheng Y, Chang L, Zou L, Zhang L, Min Y, Zhao Y. TIP aquaporins in Cyperus esculentus: genome-wide identification, expression profiles, subcellular localizations, and interaction patterns. BMC PLANT BIOLOGY 2024; 24:298. [PMID: 38632542 PMCID: PMC11025170 DOI: 10.1186/s12870-024-04969-x] [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: 07/12/2023] [Accepted: 03/31/2024] [Indexed: 04/19/2024]
Abstract
BACKGROUND Tonoplast intrinsic proteins (TIPs), which typically mediate water transport across vacuolar membranes, play an essential role in plant growth, development, and stress responses. However, their characterization in tigernut (Cyperus esculentus L.), an oil-bearing tuber plant of the Cyperaceae family, is still in the infancy. RESULTS In this study, a first genome-wide characterization of the TIP subfamily was conducted in tigernut, resulting in ten members representing five previously defined phylogenetic groups, i.e., TIP1-5. Although the gene amounts are equal to that present in two model plants Arabidopsis and rice, the group composition and/or evolution pattern were shown to be different. Except for CeTIP1;3 that has no counterpart in both Arabidopsis and rice, complex orthologous relationships of 1:1, 1:2, 1:3, 2:1, and 2:2 were observed. Expansion of the CeTIP subfamily was contributed by whole-genome duplication (WGD), transposed, and dispersed duplications. In contrast to the recent WGD-derivation of CeTIP3;1/-3;2, synteny analyses indicated that TIP4 and - 5 are old WGD repeats of TIP2, appearing sometime before monocot-eudicot divergence. Expression analysis revealed that CeTIP genes exhibit diverse expression profiles and are subjected to developmental and diurnal fluctuation regulation. Moreover, when transiently overexpressed in tobacco leaves, CeTIP1;1 was shown to locate in the vacuolar membrane and function in homo/heteromultimer, whereas CeTIP2;1 is located in the cell membrane and only function in heteromultimer. Interestingly, CeTIP1;1 could mediate the tonoplast-localization of CeTIP2;1 via protein interaction, implying complex regulatory patterns. CONCLUSIONS Our findings provide a global view of CeTIP genes, which provide valuable information for further functional analysis and genetic improvement through manipulating key members in tigernut.
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Affiliation(s)
- Zhi Zou
- National Key Laboratory for Tropical Crop Breeding/Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Institute of Tropical Biosciences and Biotechnology/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, P. R. China.
| | - Yujiao Zheng
- National Key Laboratory for Tropical Crop Breeding/Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Institute of Tropical Biosciences and Biotechnology/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, P. R. China
| | - Lili Chang
- National Key Laboratory for Tropical Crop Breeding/Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Institute of Tropical Biosciences and Biotechnology/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, P. R. China
| | - Liangping Zou
- National Key Laboratory for Tropical Crop Breeding/Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Institute of Tropical Biosciences and Biotechnology/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, P. R. China
| | - Li Zhang
- Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, College of Life Science, South-Central Minzu University, Wuhan, Hubei, 430074, P. R. China
| | - Yi Min
- Hainan University, Haikou, Hainan, 570228, P. R. China.
| | - Yongguo Zhao
- National Key Laboratory for Tropical Crop Breeding/Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions, Institute of Tropical Biosciences and Biotechnology/Sanya Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan, 571101, P. R. China.
- College of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming, Guangdong, 525000, P. R. China.
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Shah T, Khan Z, Alahmadi TA, Imran A, Asad M, Khan SR, Ansari MJ. Mycorrhizosphere bacteria inhibit chromium uptake and phytotoxicity by regulating proline metabolism, antioxidant defense system, and aquaporin gene expression in tomato. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:24836-24850. [PMID: 38456983 DOI: 10.1007/s11356-024-32755-7] [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: 01/05/2024] [Accepted: 02/29/2024] [Indexed: 03/09/2024]
Abstract
Chromium (Cr) contamination in soil-plant systems poses a pressing environmental challenge due to its detrimental impacts on plant growth and human health. Results exhibited that Cr stress decreased shoot biomass, root biomass, leaf relative water content, and plant height. However, single and co-application of Bacillus subtilis (BS) and arbuscular mycorrhizal fungi (AMF) considerably enhanced shoot biomass (+ 21%), root biomass (+ 2%), leaf relative water content (+ 26%), and plant height (+ 13) under Cr stress. The frequency of mycorrhizal (F) association (+ 5%), mycorrhizal colonization (+ 13%), and abundance of arbuscules (+ 5%) in the non-stressed soil was enhanced when inoculated with combined BS and AMF as compared to Cr-stressed soil. The co-inoculation with BS and AMF considerably enhanced total chlorophyll, carotenoids, and proline content in Cr-stressed plants. Cr-stressed plants resulted in attenuated response in SOD, POD, CAT, and GR activities when inoculated with BS and AMF consortia by altering oxidative stress biomarkers (H2O2 and MDA). In Cr-stressed plants, the combined application of BS and AMF considerably enhanced proline metabolism, for instance, P5CR (+ 17%), P5CS (+ 28%), OAT (- 22%), and ProDH (- 113%) as compared to control. Sole inoculation with AMF downregulated the expression of SIPIP2;1, SIPIP2;5, and SIPIP2;7 in Cr-stressed plants. However, the expression of NCED1 was downregulated with the application of sole AMF. In contrast, the relative expression of Le4 was upregulated in the presence of AMF and BS combination in Cr-stressed plants. Therefore, it is concluded that co-application of BS and AMF enhanced Cr tolerance by enhancing proline metabolism, antioxidant enzymes, and aquaporin gene expression. Future study might concentrate on elucidating the molecular processes behind the synergistic benefits of BS and AMF, as well as affirming their effectiveness in field experiments under a variety of environmental situations. Long-term research on the effect of microbial inoculation on soil health and plant production might also help to design sustainable chromium remediation solutions.
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Affiliation(s)
- Tariq Shah
- Department of Agronomy, Faculty of Crop Production Sciences, The University of Agriculture, Peshawar, Peshawar, 25130, Pakistan.
| | - Zeeshan Khan
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, 44000, Pakistan
| | - Tahani Awad Alahmadi
- Department of Pediatrics, College of Medicine and King, Medical City, Khalid University Hospital, King Saud University, PO Box-2925, 11461, Riyadh, Saudi Arabia
| | - Ayesha Imran
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, 44000, Pakistan
| | - Muhammad Asad
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, 44000, Pakistan
| | - Shah Rukh Khan
- Department of Plant Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, 44000, Pakistan
| | - Mohammad Javed Ansari
- Department of Botany, Hindu College, Moradabad, Mahatma Jyotiba Phule Rohilkhand University Bareilly, Moradabad, India
- College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
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Guo Z, Wei M, Xu C, Wang L, Li J, Liu J, Zhong Y, Chi B, Song S, Zhang L, Song L, Ma D, Zheng HL. Genome-wide identification of Avicennia marina aquaporins reveals their role in adaptation to intertidal habitats and their relevance to salt secretion and vivipary. PLANT, CELL & ENVIRONMENT 2024; 47:832-853. [PMID: 37984066 DOI: 10.1111/pce.14769] [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: 02/28/2023] [Revised: 10/20/2023] [Accepted: 11/06/2023] [Indexed: 11/22/2023]
Abstract
Aquaporins (AQPs) regulate the transport of water and other substrates, aiding plants in adapting to stressful environments. However, the knowledge of AQPs in salt-secreting and viviparous Avicennia marina is limited. In this study, 46 AmAQPs were identified in A. marina genome, and their subcellular localisation and function in transporting H2 O2 and boron were assessed through bioinformatics analysis and yeast transformation. Through analysing their expression patterns via RNAseq and real-time quantitative polymerase chain reaction, we found that most AmAQPs were downregulated in response to salt and tidal flooding. AmPIP (1;1, 1;7, 2;8, 2;9) and AmTIP (1;5, 1;6) as salt-tolerant candidate genes may contribute to salt secretion together with Na+ /H+ antiporters. AmPIP2;1 and AmTIP1;5 were upregulated during tidal flooding and may be regulated by anaerobic-responsive element and ethylene-responsive element cis-elements, aiding in adaptation to tidal inundation. Additionally, we found that the loss of the seed desiccation and dormancy-related TIP3 gene, and the loss of the seed dormancy regulator DOG1 gene, or DOG1 protein lack heme-binding capacity, may be genetic factors contributing to vivipary. Our findings shed light on the role of AQPs in A. marina adaptation to intertidal environments and their relevance to salt secretion and vivipary.
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Affiliation(s)
- Zejun Guo
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, School of Marine Sciences, Coral Reef Research Center of China, Guangxi University, Nanning, China
| | - Mingyue Wei
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Chaoqun Xu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Lu Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Jing Li
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Jingwen Liu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Youhui Zhong
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Bingjie Chi
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Shiwei Song
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Ludan Zhang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Lingyu Song
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Dongna Ma
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Hai-Lei Zheng
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
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Guo H, Cui Y, Li Z, Nie C, Xu Y, Hu T. Photosynthesis, Water Status and K +/Na + Homeostasis of Buchoe dactyloides Responding to Salinity. PLANTS (BASEL, SWITZERLAND) 2023; 12:2459. [PMID: 37447020 DOI: 10.3390/plants12132459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 06/17/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023]
Abstract
Soil salinization is one of the most serious abiotic stresses restricting plant growth. Buffalograss is a C4 perennial turfgrass and forage with an excellent resistance to harsh environments. To clarify the adaptative mechanisms of buffalograss in response to salinity, we investigated the effects of NaCl treatments on photosynthesis, water status and K+/Na+ homeostasis of this species, then analyzed the expression of key genes involved in these processes using the qRT-PCR method. The results showed that NaCl treatments up to 200 mM had no obvious effects on plant growth, photosynthesis and leaf hydrate status, and even substantially stimulated root activity. Furthermore, buffalograss could retain a large amount of Na+ in roots to restrict Na+ overaccumulation in shoots, and increase leaf K+ concentration to maintain a high K+/Na+ ratio under NaCl stresses. After 50 and 200 mM NaCl treatments, the expressions of several genes related to chlorophyll synthesis, photosynthetic electron transport and CO2 assimilation, as well as aquaporin genes (BdPIPs and BdTIPs) were upregulated. Notably, under NaCl treatments, the increased expression of BdSOS1, BdHKT1 and BdNHX1 in roots might have helped Na+ exclusion by root tips, retrieval from xylem sap and accumulation in root cells, respectively; the upregulation of BdHAK5 and BdSKOR in roots likely enhanced K+ uptake and long-distance transport from roots to shoots, respectively. This work finds that buffalograss possesses a strong ability to sustain high photosynthetic capacity, water balance and leaf K+/Na+ homeostasis under salt stress, and lays a foundation for elucidating the molecular mechanism underlying the salt tolerance of buffalograss.
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Affiliation(s)
- Huan Guo
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Yannong Cui
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Zhen Li
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Chunya Nie
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Yuefei Xu
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Tianming Hu
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
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Cai YS, Cai JL, Lee JT, Li YM, Balladona FK, Sukma D, Chan MT. Arabidopsis AtMSRB5 functions as a salt-stress protector for both Arabidopsis and rice. FRONTIERS IN PLANT SCIENCE 2023; 14:1072173. [PMID: 37035039 PMCID: PMC10073502 DOI: 10.3389/fpls.2023.1072173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 03/06/2023] [Indexed: 06/19/2023]
Abstract
Salinity, drought and low temperature are major environmental factors that adversely affect crop productivity worldwide. In this study we adopted an activation tagging approach to identify salt tolerant mutants of Arabidopsis. Thousands of tagged Arabidopsis lines were screened to obtain several potential mutant lines resistant to 150 mM NaCl. Transcript analysis of a salt-stress tolerance 1 (sst1) mutant line indicated activation of AtMSRB5 and AtMSRB6 which encode methionine sulfoxide reductases. Overexpression of AtMSRB5 in Arabidopsis (B5OX) showed a similar salt tolerant phenotype. Furthermore, biochemical analysis indicated stability of the membrane protein, H+-ATPase 2 (AHA2) through regulation of Na+/K+ homeostasis which may be involved in a stress tolerance mechanism. Similarly, overexpression of AtMSRB5 in transgenic rice demonstrated a salt tolerant phenotype via the modulation of Na+/K+ homeostasis without a yield drag under salt and oxidative stress conditions.
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Affiliation(s)
- Yu-Si Cai
- Graduate Program of Translational Agricultural Sciences, National Cheng Kung University and Academia Sinica, Tainan, Taiwan
- Academia Sinica Biotechnology Center in Southern Taiwan, Agricultural Biotechnology Research Center, Academia Sinica, Tainan, Taiwan
| | - Jung-Long Cai
- Academia Sinica Biotechnology Center in Southern Taiwan, Agricultural Biotechnology Research Center, Academia Sinica, Tainan, Taiwan
| | - Jent-Turn Lee
- Academia Sinica Biotechnology Center in Southern Taiwan, Agricultural Biotechnology Research Center, Academia Sinica, Tainan, Taiwan
| | - Yi-Min Li
- Academia Sinica Biotechnology Center in Southern Taiwan, Agricultural Biotechnology Research Center, Academia Sinica, Tainan, Taiwan
| | - Freta Kirana Balladona
- Graduate Program of Translational Agricultural Sciences, National Cheng Kung University and Academia Sinica, Tainan, Taiwan
- Academia Sinica Biotechnology Center in Southern Taiwan, Agricultural Biotechnology Research Center, Academia Sinica, Tainan, Taiwan
| | - Dewi Sukma
- Department of Agronomy & Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia
| | - Ming-Tsair Chan
- Graduate Program of Translational Agricultural Sciences, National Cheng Kung University and Academia Sinica, Tainan, Taiwan
- Academia Sinica Biotechnology Center in Southern Taiwan, Agricultural Biotechnology Research Center, Academia Sinica, Tainan, Taiwan
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Zaghdoud C, Ollio I, Solano CJ, Ochoa J, Suardiaz J, Fernández JA, Martínez Ballesta MDC. Red LED Light Improves Pepper ( Capsicum annuum L.) Seed Radicle Emergence and Growth through the Modulation of Aquaporins, Hormone Homeostasis, and Metabolite Remobilization. Int J Mol Sci 2023; 24:ijms24054779. [PMID: 36902208 PMCID: PMC10002511 DOI: 10.3390/ijms24054779] [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: 02/07/2023] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Red LED light (R LED) is an efficient tool to improve seed germination and plant growth under controlled environments since it is more readily absorbed by photoreceptors' phytochromes compared to other wavelengths of the spectrum. In this work, the effect of R LED on the radicle emergence and growth (Phase III of germination) of pepper seeds was evaluated. Thus, the impact of R LED on water transport through different intrinsic membrane proteins, via aquaporin (AQP) isoforms, was determined. In addition, the remobilization of distinct metabolites such as amino acids, sugars, organic acids, and hormones was analysed. R LED induced a higher germination speed index, regulated by an increased water uptake. PIP2;3 and PIP2;5 aquaporin isoforms were highly expressed and could contribute to a faster and more effective hydration of embryo tissues, leading to a reduction of the germination time. By contrast, TIP1;7, TIP1;8, TIP3;1 and TIP3;2 gene expressions were reduced in R LED-treated seeds, pointing to a lower need for protein remobilization. NIP4;5 and XIP1;1 were also involved in radicle growth but their role needs to be elucidated. In addition, R LED induced changes in amino acids and organic acids as well as sugars. Therefore, an advanced metabolome oriented to a higher energetic metabolism was observed, conditioning better seed germination performance together with a rapid water flux.
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Affiliation(s)
- Chokri Zaghdoud
- Bureau de Transfert de Technologie (BuTT), Université de Gafsa, Gafsa 2112, Tunisia
| | - Irene Ollio
- Ingeniería Agronómica, Technical University of Cartagena, Paseo Alfonso XIII 48, E-30203 Cartagena, Spain
- Recursos Fitogenéticos, Instituto de Biotecnología Vegetal, Edificio I+D+i, E-30202 Cartagena, Spain
| | - Cristóbal J. Solano
- División of Innovation in Telematic Systems and Electronic Technology (DINTEL), Technical University of Cartagena, Campus Muralla del Mar, s/n, E-30202 Cartagena, Spain
| | - Jesús Ochoa
- Ingeniería Agronómica, Technical University of Cartagena, Paseo Alfonso XIII 48, E-30203 Cartagena, Spain
- Recursos Fitogenéticos, Instituto de Biotecnología Vegetal, Edificio I+D+i, E-30202 Cartagena, Spain
| | - Juan Suardiaz
- División of Innovation in Telematic Systems and Electronic Technology (DINTEL), Technical University of Cartagena, Campus Muralla del Mar, s/n, E-30202 Cartagena, Spain
| | - Juan A. Fernández
- Ingeniería Agronómica, Technical University of Cartagena, Paseo Alfonso XIII 48, E-30203 Cartagena, Spain
- Recursos Fitogenéticos, Instituto de Biotecnología Vegetal, Edificio I+D+i, E-30202 Cartagena, Spain
| | - María del Carmen Martínez Ballesta
- Ingeniería Agronómica, Technical University of Cartagena, Paseo Alfonso XIII 48, E-30203 Cartagena, Spain
- Recursos Fitogenéticos, Instituto de Biotecnología Vegetal, Edificio I+D+i, E-30202 Cartagena, Spain
- Correspondence: ; Tel.: +34-968-325457
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9
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Kohli PS, Pazhamala LT, Mani B, Thakur JK, Giri J. Root hair-specific transcriptome reveals response to low phosphorus in Cicer arietinum. FRONTIERS IN PLANT SCIENCE 2022; 13:983969. [PMID: 36267945 PMCID: PMC9577374 DOI: 10.3389/fpls.2022.983969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/16/2022] [Indexed: 06/16/2023]
Abstract
Root hairs (RH) are a single-cell extension of root epidermal cells. In low phosphorus (LP) availability, RH length and density increase thus expanding the total root surface area for phosphate (Pi) acquisition. However, details on genes involved in RH development and response to LP are missing in an agronomically important leguminous crop, chickpea. To elucidate this response in chickpea, we performed tissue-specific RNA-sequencing and analyzed the transcriptome modulation for RH and root without RH (Root-RH) under LP. Root hair initiation and cellular differentiation genes like RSL TFs and ROPGEFs are upregulated in Root-RH, explaining denser, and ectopic RH in LP. In RH, genes involved in tip growth processes and phytohormonal biosynthesis like cell wall synthesis and loosening (cellulose synthase A catalytic subunit, CaEXPA2, CaGRP2, and CaXTH2), cytoskeleton/vesicle transport, and ethylene biosynthesis are upregulated. Besides RH development, genes involved in LP responses like lipid and/or pectin P remobilization and acid phosphatases are induced in these tissues summarizing a complete molecular response to LP. Further, RH displayed preferential enrichment of processes involved in symbiotic interactions, which provide an additional benefit during LP. In conclusion, RH shows a multi-faceted response that starts with molecular changes for epidermal cell differentiation and RH initiation in Root-RH and later induction of tip growth and various LP responses in elongated RH.
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Affiliation(s)
| | | | - Balaji Mani
- National Institute of Plant Genome Research (NIPGR), New Delhi, India
| | - Jitendra Kumar Thakur
- National Institute of Plant Genome Research (NIPGR), New Delhi, India
- International Center of Genetic Engineering and Biotechnology, New Delhi, India
| | - Jitender Giri
- National Institute of Plant Genome Research (NIPGR), New Delhi, India
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10
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Guo Z, Ma D, Li J, Wei M, Zhang L, Zhou L, Zhou X, He S, Wang L, Shen Y, Li QQ, Zheng HL. Genome-wide identification and characterization of aquaporins in mangrove plant Kandelia obovata and its role in response to the intertidal environment. PLANT, CELL & ENVIRONMENT 2022; 45:1698-1718. [PMID: 35141923 DOI: 10.1111/pce.14286] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 01/30/2022] [Indexed: 05/26/2023]
Abstract
Aquaporins (AQPs) play important roles in plant growth, development and tolerance to environmental stresses. To understand the role of AQPs in the mangrove plant Kandelia obovata, which has the ability to acquire water from seawater, we identified 34 AQPs in the K. obovata genome and analysed their structural features. Phylogenetic analysis revealed that KoAQPs are homologous to AQPs of Populus and Arabidopsis, which are evolutionarily conserved. The key amino acid residues were used to assess water-transport ability. Analysis of cis-acting elements in the promoters indicated that KoAQPs may be stress- and hormone-responsive. Subcellular localization of KoAQPs in yeast showed most KoAQPs function in the membrane system. That transgenic yeast with increased cell volume showed that some KoAQPs have significant water-transport activity, and the substrate sensitivity assay indicates that some KoAQPs can transport H2 O2 . The transcriptome data were used to analyze the expression patterns of KoAQPs in different tissues and developing fruits of K. obovata. In addition, real-time quantitative PCR analyses combined transcriptome data showed that KoAQPs have complex responses to environmental factors, including salinity, flooding and cold. Collectively, the transport of water and solutes by KoAQPs contributed to the adaptation of K. obovata to the coastal intertidal environment.
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Affiliation(s)
- Zejun Guo
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Dongna Ma
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Jing Li
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Mingyue Wei
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Ludan Zhang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Lichun Zhou
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Xiaoxuan Zhou
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Shanshan He
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Lin Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Yingjia Shen
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
| | - Qingshun Quinn Li
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
- Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, California, USA
| | - Hai-Lei Zheng
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, China
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11
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Mandlik R, Singla P, Kumawat S, Khatri P, Ansari W, Singh A, Sharma Y, Singh A, Solanke A, Nadaf A, Sonah H, Deshmukh R. Understanding aquaporin regulation defining silicon uptake and role in arsenic, antimony and germanium stress in pigeonpea (Cajanus cajan). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 294:118606. [PMID: 34863894 DOI: 10.1016/j.envpol.2021.118606] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 10/23/2021] [Accepted: 11/28/2021] [Indexed: 06/13/2023]
Abstract
Understanding of aquaporins (AQPs) facilitating the transport of water and many other small solutes including metalloids like silicon (Si) and arsenic (As) is important to develop stress tolerant cultivars. In the present study, 40 AQPs were identified in the genome of pigeonpea (Cajanus cajan), a pulse crop widely grown in semi-arid region and areas known to affected with heavy metals like As. Conserved domains, variation at NPA motifs, aromatic/arginine (ar/R) selectivity filters, and pore morphology defined here will be crucial in predicting solute specificity of pigeonpea AQPs. The study identified CcNIP2-1 as an AQP predicted to transporter Si (beneficial element) as well as As (hazardous element). Further Si quantification in different tissues showed about 1.66% Si in leaves which confirmed the predictions. Furthermore, scanning electron microscopy showed a higher level of Si accumulation in trichomes on the leaf surface. A significant alleviation in level of As, Sb and Ge stress was also observed when these heavy metals were supplemented with Si. Estimation of relative water content, H2O2, lipid peroxidation, proline, total chlorophyll content and other physiological parameters suggested Si derived stress tolerance. Extensive transcriptome profiling under different developmental stages from germination to senescence was performed to understand the tissue-specific regulation of different AQPs. For instance, high expression of TIP3s was observed only in reproductive tissues. Co-expression network developed using transcriptome data from 30 different conditions and tissues, showed interdependency of AQPs. Expression profiling of pigeonpea performed using real time PCR showed differential expression of AQPs after Si supplementation. The information generated about the phylogeny, distribution, molecular evolution, solute specificity, and gene expression dynamics in article will be helpful to better understand the AQP transport system in pigeonpea and other legumes.
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Affiliation(s)
- Rushil Mandlik
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Department of Biotechnology, Panjab University, Chandigarh, India
| | - Pankaj Singla
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; University of Western Ontario, London, Ontario, Canada
| | - Surbhi Kumawat
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Department of Biotechnology, Panjab University, Chandigarh, India
| | - Praveen Khatri
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Waquar Ansari
- Department of Botany, Savitribai Phule Pune University, Pune, India
| | - Anuradha Singh
- National Institute for Plant Biotechnology (NIPB), New Delhi, Delhi, India
| | - Yogesh Sharma
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Archana Singh
- Division of Biochemistry, Indian Agriculture Research Institute (IARI), New Delhi, India
| | - Amol Solanke
- National Institute for Plant Biotechnology (NIPB), New Delhi, Delhi, India
| | | | - Humira Sonah
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Rupesh Deshmukh
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India.
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12
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Cheng G, Wang M, Zhang L, Wei H, Wang H, Lu J, Yu S. Overexpression of a Cotton Aquaporin Gene GhTIP1;1-like Confers Cold Tolerance in Transgenic Arabidopsis. Int J Mol Sci 2022; 23:ijms23031361. [PMID: 35163287 PMCID: PMC8836057 DOI: 10.3390/ijms23031361] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/22/2022] [Accepted: 01/23/2022] [Indexed: 11/21/2022] Open
Abstract
Cold stress can significantly affect the development, yield, and quality of crops and restrict the geographical distribution and growing seasons of plants. Aquaporins are the main channels for water transport in plant cells. Abiotic stresses such as cold and drought dehydrate cells by changing the water potential. In this study, we cloned a gene GhTIP1;1-like encodes tonoplast aquaporin from the transcriptome database of cotton seedlings after cold stress. Expression analysis showed that GhTIP1;1-like not only responds to cold stress but was also induced by heat, drought and salt stress. Subcellular localization showed that the protein was anchored to the vacuole membrane. Promoter deletion analysis revealed that a MYC motif within the promoter region of GhTIP1;1-like were the core cis-elements in response to low temperature. Virus-induced gene silencing (VIGS) and histochemical staining indicate that GhTIP1;1-like plays a positive role in plant cold tolerance. Overexpression of GhTIP1;1-like in Arabidopsis delayed the senescence process and enhanced the cold tolerance of transgenic plants. Compared with the wild type, the soluble protein concentration and peroxidase activity of the transgenic lines under cold stress were higher, while the malondialdehyde content was lower. In addition, the expression levels of cold-responsive genes were significantly increased in transgenic plants under cold stress. Our results indicate that GhTIP1;1-like could respond to different abiotic stresses and be positively involved in regulating the cold tolerance of cotton.
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Affiliation(s)
- Gongmin Cheng
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China; (G.C.); (L.Z.); (H.W.); (H.W.); (J.L.)
- School of Biological Science and Food Engineering, Chuzhou University, Chuzhou 239000, China;
- College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China
| | - Mengdi Wang
- School of Biological Science and Food Engineering, Chuzhou University, Chuzhou 239000, China;
- School of Life Science, Northeast Normal University, Changchun 130024, China
| | - Longyan Zhang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China; (G.C.); (L.Z.); (H.W.); (H.W.); (J.L.)
- College of Agronomy, Hebei Agricultural University, Baoding 071001, China
| | - Hengling Wei
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China; (G.C.); (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Hantao Wang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China; (G.C.); (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Jianhua Lu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China; (G.C.); (L.Z.); (H.W.); (H.W.); (J.L.)
| | - Shuxun Yu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of CAAS, Anyang 455000, China; (G.C.); (L.Z.); (H.W.); (H.W.); (J.L.)
- College of Agronomy, Northwest A&F University, Yangling, Xianyang 712100, China
- Correspondence: ; Tel.: +86-188-0372-9718
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13
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Su Y, Liu Z, Sun J, Wu C, Li Y, Zhang C, Zhao L. Genome-Wide Identification of Maize Aquaporin and Functional Analysis During Seed Germination and Seedling Establishment. FRONTIERS IN PLANT SCIENCE 2022; 13:831916. [PMID: 35154233 PMCID: PMC8828918 DOI: 10.3389/fpls.2022.831916] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 01/07/2022] [Indexed: 05/10/2023]
Abstract
Water uptake facilitates the initiation of seed germination. It is presumed that aquaporin (AQP)-mediated water inflow contributes to seed germination, but the genetic evidence is still lacking. This study aimed at genome-wide identification of ZmAQPs and further determined the physiological functions. Following a comprehensive search, a total of 41 ZmAQPs were identified according to the latest genome database. Through bioinformatic approaches, the physicochemical characteristics, phylogenetic relationships, and structural features of ZmAQPs were analyzed. The gene expression analysis of 20 high-resolution and multi-tissues samples showed that ZmAQPs had distinct spatiotemporal and tissue-specific expression profiles during seed germination and early seedling development. We then focused on the aquaporin of maize tonoplast intrinsic protein 3 (ZmTIP3), which is specifically expressed in germinating seed. A mutant zmtip3-1 with disruption of the ZmTIP3-1 gene showed shorter shoot and root length, and decreased seedling dry weight compared with the control (W22). The result revealed that ZmTIP3-1 improved the absolute content of seed protein and promoted storage reserves mobilization, suggesting that ZmTIP3 may be a positive regulator of seed vigor. This work provides valuable clues for understanding the function and possible regulatory mechanism of ZmAQPs in seed germination and seedling growth.
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14
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Zhu Y, Wang Q, Guo W, Gao Z, Wang Y, Xu Y, Liu Y, Ma Z, Yan F, Li J. Screening and identification of salt-tolerance genes in Sophora alopecuroides and functional verification of SaAQP. PLANTA 2021; 254:77. [PMID: 34535825 DOI: 10.1007/s00425-021-03726-w] [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: 02/20/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
Overexpression of SaAQP can improve the salt tolerance of transgenic soybean hairy roots and A. thaliana. Salt stress severely affects crop yield and food security. There is a need to improve the salt tolerance of crops, but the discovery and utilization of salt-tolerance genes remains limited. Owing to its strong stress tolerance, Sophora alopecuroides is ideal for the identification of salt-tolerance genes. Therefore, we aimed to screen and identify the salt-tolerance genes in S. alopecuroides. With a yeast expression library of seedlings, salt-tolerant genes were screened using a salt-containing medium to simulate salt stress. By combining salt-treatment screening and transcriptome sequencing, 11 candidate genes related to salt tolerance were identified, including genes for peroxidase, inositol methyltransferase, aquaporin, cysteine synthase, pectinesterase, and WRKY. The expression dynamics of candidate genes were analyzed after salt treatment of S. alopecuroides, and salt tolerance was verified in yeast BY4743. The candidate genes participated in the salt-stress response in S. alopecuroides, and their overexpression significantly improved the salt tolerance of yeast. Salt tolerance mediated by SaAQP was further verified in soybean hairy roots and Arabidopsis thaliana, and it was found that SaAQP might enhance the salt tolerance of A. thaliana by participating in a reactive oxygen species scavenging mechanism. This result provides new genetic resources in plant breeding for salt resistance.
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Affiliation(s)
- Youcheng Zhu
- College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun City, China
| | - Qingyu Wang
- College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun City, China
| | - Wenyun Guo
- College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun City, China
| | - Ziwei Gao
- College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun City, China
| | - Ying Wang
- College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun City, China
| | - Yang Xu
- College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun City, China
| | - Yajing Liu
- College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun City, China
| | - Zhipeng Ma
- College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun City, China
| | - Fan Yan
- College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun City, China.
| | - Jingwen Li
- College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun City, China.
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15
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Zhang M, Yang H, Zhu F, Xu R, Cheng Y. Transcript profiles analysis of citrus aquaporins in response to fruit water loss during storage. PLANT BIOLOGY (STUTTGART, GERMANY) 2021; 23:819-830. [PMID: 33797834 DOI: 10.1111/plb.13269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 03/22/2021] [Indexed: 05/02/2023]
Abstract
Water loss is an essential factor that affects the maintenance of quality of citrus fruit during postharvest handling and storage. Aquaporins (AQPs) play an important role in the transport of water across membranes. However, the expression profiling of AQPs is incomplete for citrus fruits during storage. In this study, a post-harvest storage experiment was performed using sweet orange fruits to determine changes in water loss and fruit quality. Also, genome-wide expression analysis of CsAQP genes was carried out in fruit of different citrus varieties during storage. Low humidity storage conditions accelerated the postharvest water loss and texture decline and increased the TSS content in the fruit. A total of 39 non-redundant CsAQP genes were identified. A comprehensive analysis of these genes demonstrated that all AQPs had conserved filter motifs in the different citrus varieties examined. Moreover, multiple expression analysis revealed AQPs had complex expression profiles upon water loss in citrus fruit, being time-specific in tight-skin varieties (orange and pomelo varieties), tissue-specific between peel and pulp, and variety-specific between loose-skin (mandarin varieties) and tight-skin varieties (such as sweet orange and pummelo). These results indicated that the relative humidity in storage environment affected the postharvest water loss and quality of citrus fruit. Besides, the alternation in AQPs expression may partially account for the different water loss ratio in citrus varieties and the transfer of water between the peel and the pulp of citrus fruit during storage.
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Affiliation(s)
- M Zhang
- National R&D Centre for Citrus Preservation, Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, China
| | - H Yang
- National R&D Centre for Citrus Preservation, Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, China
| | - F Zhu
- National R&D Centre for Citrus Preservation, Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, China
| | - R Xu
- National R&D Centre for Citrus Preservation, Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, China
| | - Y Cheng
- National R&D Centre for Citrus Preservation, Key Laboratory of Horticultural Plant Biology (Ministry of Education), College of Horticulture and Forestry Science, Huazhong Agricultural University, Wuhan, China
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16
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Sager R, Bennett M, Lee JY. A Tale of Two Domains Pushing Lateral Roots. TRENDS IN PLANT SCIENCE 2021; 26:770-779. [PMID: 33685810 DOI: 10.1016/j.tplants.2021.01.006] [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: 10/30/2020] [Revised: 01/25/2021] [Accepted: 01/29/2021] [Indexed: 06/12/2023]
Abstract
Successful plant organ development depends on well-coordinated intercellular communication between the cells of the organ itself, as well as with surrounding cells. Intercellular signals often move via the symplasmic pathway using plasmodesmata. Intriguingly, brief periods of symplasmic isolation may also be necessary to promote organ differentiation and functionality. Recent findings suggest that symplasmic isolation of a subset of parental root cells and newly forming lateral root primordia (LRPs) plays a vital role in modulating lateral root development and emergence. In this opinion article we discuss how two symplasmic domains may be simultaneously established within an LRP and its overlying cells, and the significance of plasmodesmata in this process.
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Affiliation(s)
- Ross Sager
- Department of Plant and Soil Sciences, University of Delaware, Newark, DE 19711, USA
| | - Malcolm Bennett
- Centre for Plant Integrative Biology, University of Nottingham, Nottingham LE12 5RD, UK
| | - Jung-Youn Lee
- Department of Plant and Soil Sciences, University of Delaware, Newark, DE 19711, USA; Delaware Biotechnology Institute, University of Delaware, Newark, DE 19711, USA.
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17
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Tyerman SD, McGaughey SA, Qiu J, Yool AJ, Byrt CS. Adaptable and Multifunctional Ion-Conducting Aquaporins. ANNUAL REVIEW OF PLANT BIOLOGY 2021; 72:703-736. [PMID: 33577345 DOI: 10.1146/annurev-arplant-081720-013608] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Aquaporins function as water and neutral solute channels, signaling hubs, disease virulence factors, and metabolon components. We consider plant aquaporins that transport ions compared to some animal counterparts. These are candidates for important, as yet unidentified, cation and anion channels in plasma, tonoplast, and symbiotic membranes. For those individual isoforms that transport ions, water, and gases, the permeability spans 12 orders of magnitude. This requires tight regulation of selectivity via protein interactions and posttranslational modifications. A phosphorylation-dependent switch between ion and water permeation in AtPIP2;1 might be explained by coupling between the gates of the four monomer water channels and the central pore of the tetramer. We consider the potential for coupling between ion and water fluxes that could form the basis of an electroosmotic transducer. A grand challenge in understanding the roles of ion transporting aquaporins is their multifunctional modes that are dependent on location, stress, time, and development.
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Affiliation(s)
- Stephen D Tyerman
- Australian Research Council (ARC) Centre of Excellence in Plant Energy Biology, School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, South Australia 5064, Australia; ,
| | - Samantha A McGaughey
- ARC Centre of Excellence for Translational Photosynthesis, Division of Plant Sciences, Research School of Biology, Australian National University, Acton, Australian Capital Territory 0200, Australia; ,
| | - Jiaen Qiu
- Australian Research Council (ARC) Centre of Excellence in Plant Energy Biology, School of Agriculture, Food and Wine, University of Adelaide, Glen Osmond, South Australia 5064, Australia; ,
| | - Andrea J Yool
- Adelaide Medical School, University of Adelaide, Adelaide, South Australia 5005, Australia;
| | - Caitlin S Byrt
- ARC Centre of Excellence for Translational Photosynthesis, Division of Plant Sciences, Research School of Biology, Australian National University, Acton, Australian Capital Territory 0200, Australia; ,
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18
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Jiang YT, Yang LH, Ferjani A, Lin WH. Multiple functions of the vacuole in plant growth and fruit quality. MOLECULAR HORTICULTURE 2021; 1:4. [PMID: 37789408 PMCID: PMC10509827 DOI: 10.1186/s43897-021-00008-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 04/09/2021] [Indexed: 10/05/2023]
Abstract
Vacuoles are organelles in plant cells that play pivotal roles in growth and developmental regulation. The main functions of vacuoles include maintaining cell acidity and turgor pressure, regulating the storage and transport of substances, controlling the transport and localization of key proteins through the endocytic and lysosomal-vacuolar transport pathways, and responding to biotic and abiotic stresses. Further, proteins localized either in the tonoplast (vacuolar membrane) or inside the vacuole lumen are critical for fruit quality. In this review, we summarize and discuss some of the emerging functions and regulatory mechanisms associated with plant vacuoles, including vacuole biogenesis, vacuole functions in plant growth and development, fruit quality, and plant-microbe interaction, as well as some innovative research technology that has driven advances in the field. Together, the functions of plant vacuoles are important for plant growth and fruit quality. The investigation of vacuole functions in plants is of great scientific significance and has potential applications in agriculture.
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Affiliation(s)
- Yu-Tong Jiang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences & Biotechnology, Joint Center for Single Cell Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Lu-Han Yang
- Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences & Biotechnology, Joint Center for Single Cell Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ali Ferjani
- Department of Biology, Tokyo Gakugei University, Koganei-shi, 184-8501, Japan
| | - Wen-Hui Lin
- Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences & Biotechnology, Joint Center for Single Cell Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
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19
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Kumawat S, Khatri P, Ahmed A, Vats S, Kumar V, Jaswal R, Wang Y, Xu P, Mandlik R, Shivaraj SM, Deokar A, Sonah H, Sharma TR, Deshmukh R. Understanding aquaporin transport system, silicon and other metalloids uptake and deposition in bottle gourd (Lagenaria siceraria). JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124598. [PMID: 33234398 DOI: 10.1016/j.jhazmat.2020.124598] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 11/01/2020] [Accepted: 11/13/2020] [Indexed: 06/11/2023]
Abstract
Aquaporins (AQPs) facilitates the transport of small solutes like water, urea, carbon dioxide, boron, and silicon (Si) and plays a critical role in important physiological processes. In this study, genome-wide characterization of AQPs was performed in bottle gourd. A total of 36 AQPs were identified in the bottle gourd, which were subsequently analyzed to understand the pore-morphology, exon-intron structure, subcellular-localization. In addition, available transcriptome data was used to study the tissue-specific expression. Several AQPs showed tissue-specific expression, more notably the LsiTIP3-1 having a high level of expression in flowers and fruits. Based on the in-silico prediction of solute specificity, LsiNIP2-1 was predicted to be a Si transporter. Silicon was quantified in different tissues, including root, young leaves, mature leaves, tendrils, and fruits of bottle gourd plants. More than 1.3% Si (d.w.) was observed in bottle gourd leaves, testified the in-silico predictions. Silicon deposition evaluated with an energy-dispersive X-ray coupled with a scanning electron microscope showed a high Si accumulation in the shaft of leaf trichomes. Similarly, co-localization of Si with arsenic and antimony was observed. Expression profiling performed with real-time quantitative PCR showed differential expression of AQPs in response to Si supplementation. The information provided in the present study will be helpful to better understand the AQP transport mechanism, particularly Si and other metalloids transport and localization in plants.
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Affiliation(s)
- Surbhi Kumawat
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Department of Biotechnology, Panjab University, Chandigarh, India
| | - Praveen Khatri
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Ashique Ahmed
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Darrang College, Tezpur, Sonitpur, Assam, India
| | - Sanskriti Vats
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Virender Kumar
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Rajdeep Jaswal
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Ying Wang
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Pei Xu
- College of Life Sciences, China Jiliang University, Hangzhou, China
| | - Rushil Mandlik
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Department of Biotechnology, Panjab University, Chandigarh, India
| | - S M Shivaraj
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Amit Deokar
- Department of Plant Sciences, Crop Development Centre, University of Saskatchewan, Saskatoon, Canada
| | - Humira Sonah
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India
| | - Tilak Raj Sharma
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India; Division of Crop Science, Indian Council of Agricultural Research, New Delhi, India
| | - Rupesh Deshmukh
- National Agri-Food Biotechnology Institute (NABI), Mohali, Punjab, India.
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20
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Sudhakaran S, Thakral V, Padalkar G, Rajora N, Dhiman P, Raturi G, Sharma Y, Tripathi DK, Deshmukh R, Sharma TR, Sonah H. Significance of solute specificity, expression, and gating mechanism of tonoplast intrinsic protein during development and stress response in plants. PHYSIOLOGIA PLANTARUM 2021; 172:258-274. [PMID: 33723851 DOI: 10.1111/ppl.13386] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 03/01/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
Tonoplast intrinsic proteins (TIPs), belonging to the aquaporin family, are transmembrane channels located mostly at the tonoplast of plant cells. The TIPs are known to transport water and many other small solutes such as ammonia, urea, hydrogen peroxide, and glycerol. In the present review, phylogenetic distribution, structure, transport dynamics, gating mechanism, sub-cellular localization, tissue-specific expression, and co-expression of TIPs are discussed to define their versatile role in plants. Based on the phylogenetic distribution, TIPs are classified into five distinct groups with aromatic-arginine (Ar/R) selectivity filters, typical pore-morphology, and tissue-specific gene expression patterns. The tissue-specific expression of TIPs is conserved among diverse plant species, more particularly for TIP3s, which are expressed exclusively in seeds. Studying TIP3 evolution will help to understand seed development and germination. The solute specificity of TIPs plays an imperative role in physiological processes like stomatal movement and vacuolar sequestration as well as in alleviating environmental stress. TIPs also play an important role in growth and developmental processes like radicle protrusion, anther dehiscence, seed germination, cell elongation, and expansion. The gating mechanism of TIPs regulates the solute flow in response to external signals, which helps to maintain the physiological functions of the cell. The information provided in this review is a base to explore TIP's potential in crop improvement programs.
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Affiliation(s)
- Sreeja Sudhakaran
- Division of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
- Department of Biotechnology, Panjab University, Chandigarh, India
| | - Vandana Thakral
- Division of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
- Department of Biotechnology, Panjab University, Chandigarh, India
| | - Gunashri Padalkar
- Division of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
- Department of Biotechnology, Panjab University, Chandigarh, India
| | - Nitika Rajora
- Division of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Pallavi Dhiman
- Division of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
- Department of Biotechnology, Panjab University, Chandigarh, India
| | - Gaurav Raturi
- Division of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
- Department of Biotechnology, Panjab University, Chandigarh, India
| | - Yogesh Sharma
- Division of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Durgesh K Tripathi
- Amity Institute of Organic Agriculture (AIOA), Amity University Uttar Pradesh, Noida, India
| | - Rupesh Deshmukh
- Division of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Tilak Raj Sharma
- Division of Crop Science, Indian Council of Agricultural Research, New Delhi, India
| | - Humira Sonah
- Division of Agri-Biotechnology, National Agri-Food Biotechnology Institute (NABI), Mohali, India
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21
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Cheng XF, Wu HH, Zou YN, Wu QS, Kuča K. Mycorrhizal response strategies of trifoliate orange under well-watered, salt stress, and waterlogging stress by regulating leaf aquaporin expression. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 162:27-35. [PMID: 33662869 DOI: 10.1016/j.plaphy.2021.02.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 02/19/2021] [Indexed: 05/24/2023]
Abstract
Aquaporins (AQPs) involved in water and small molecule transport respond to environmental stress, while it is not clear how arbuscular mycorrhizal fungi (AMF) regulate AQP expression. Here, we investigated the change in leaf water potential and expression level of four tonoplast intrinsic proteins (TIPs), six plasma membrane intrinsic proteins (PIPs), and four nodin-26 like intrinsic proteins (NIPs) genes in trifoliate orange (Poncirus trifoliata) inoculated with Funneliformis mosseae under well-watered (WW), salt stress (SS), and waterlogging stress (WS). Root AMF colonization and soil hyphal length collectively were reduced by SS and WS. Under WW, inoculation with AMF gave diverse responses of AQPs: six AQPs up-regulated, three AQPs down-regulated, and five AQPs did not change. Such up-regulation of more AQPs under mycorrhization and WW partly accelerated water absorption, thereby, maintaining higher leaf water potential. However, under SS, all the fourteen AQPs were dramatically induced by AMF inoculation, which improved water permeability of membranes and stimulated water transport of the host. Under WS, AMF colonization almost did not induce or even down-regulated these AQPs expressions with three exceptions (PtTIP2;2, PtPIP1;1, and PtNIP1;2), thus, no change in leaf water potential. As a result, mycorrhizal plants under flooding may have an escape mechanism to reduce water absorption. It is concluded that AMF had different strategies in response to environmental stresses (e.g. SS and WS) by regulating leaf AQP expression in the host (e.g. trifoliate orange).
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Affiliation(s)
- Xiao-Fen Cheng
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei, 434025, China
| | - Hui-Hui Wu
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei, 434025, China
| | - Ying-Ning Zou
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei, 434025, China.
| | - Qiang-Sheng Wu
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, College of Horticulture and Gardening, Yangtze University, Jingzhou, Hubei, 434025, China; Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, 50003, Czech Republic.
| | - Kamil Kuča
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove, 50003, Czech Republic
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22
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Li Q, Tong T, Jiang W, Cheng J, Deng F, Wu X, Chen ZH, Ouyang Y, Zeng F. Highly Conserved Evolution of Aquaporin PIPs and TIPs Confers Their Crucial Contribution to Flowering Process in Plants. FRONTIERS IN PLANT SCIENCE 2021; 12:761713. [PMID: 35058944 PMCID: PMC8764411 DOI: 10.3389/fpls.2021.761713] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 11/22/2021] [Indexed: 05/10/2023]
Abstract
Flowering is the key process for the sexual reproduction in seed plants. In gramineous crops, the process of flowering, which includes the actions of both glume opening and glume closing, is directly driven by the swelling and withering of lodicules due to the water flow into and out of lodicule cells. All these processes are considered to be controlled by aquaporins, which are the essential transmembrane proteins that facilitate the transport of water and other small molecules across the biological membranes. In the present study, the evolution of aquaporins and their contribution to flowering process in plants were investigated via an integration of genome-wide analysis and gene expression profiling. Across the barley genome, we found that HvTIP1;1, HvTIP1;2, HvTIP2;3, and HvPIP2;1 were the predominant aquaporin genes in lodicules and significantly upregulated in responding to glume opening and closing, suggesting the importance of them in the flowering process of barley. Likewise, the putative homologs of the above four aquaporin genes were also abundantly expressed in lodicules of the other monocots like rice and maize and in petals of eudicots like cotton, tobacco, and tomato. Furthermore, all of them were mostly upregulated in responding to the process of floret opening, indicating a conserved function of these aquaporin proteins in plant flowering. The phylogenetic analysis based on the OneKP database revealed that the homologs of TIP1;1, TIP1;2, TIP2;3, and PIP2;1 were highly conserved during the evolution, especially in the angiosperm species, in line with their conserved function in controlling the flowering process. Taken together, it could be concluded that the highly evolutionary conservation of TIP1;1, TIP1;2, TIP2;3 and PIP2;1 plays important roles in the flowering process for both monocots and eudicots.
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Affiliation(s)
- Qi Li
- Institute of Crop Science, Zhejiang University, Hangzhou, China
| | - Tao Tong
- Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
| | - Wei Jiang
- Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
| | - Jianhui Cheng
- Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
| | - Fenglin Deng
- Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
| | - Xiaojian Wu
- Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Zhong-Hua Chen
- School of Science, Western Sydney University, Penrith, NSW, Australia
| | - Younan Ouyang
- China National Rice Research Institute, Hangzhou, China
| | - Fanrong Zeng
- Institute of Crop Science, Zhejiang University, Hangzhou, China
- Collaborative Innovation Center for Grain Industry, College of Agriculture, Yangtze University, Jingzhou, China
- *Correspondence: Fanrong Zeng,
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23
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Versatile Roles of Aquaporins in Plant Growth and Development. Int J Mol Sci 2020; 21:ijms21249485. [PMID: 33322217 PMCID: PMC7763978 DOI: 10.3390/ijms21249485] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 12/14/2022] Open
Abstract
Aquaporins (AQPs) are universal membrane integrated water channel proteins that selectively and reversibly facilitate the movement of water, gases, metalloids, and other small neutral solutes across cellular membranes in living organisms. Compared with other organisms, plants have the largest number of AQP members with diverse characteristics, subcellular localizations and substrate permeabilities. AQPs play important roles in plant water relations, cell turgor pressure maintenance, the hydraulic regulation of roots and leaves, and in leaf transpiration, root water uptake, and plant responses to multiple biotic and abiotic stresses. They are also required for plant growth and development. In this review, we comprehensively summarize the expression and roles of diverse AQPs in the growth and development of various vegetative and reproductive organs in plants. The functions of AQPs in the intracellular translocation of hydrogen peroxide are also discussed.
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24
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Wachsman G, Zhang J, Moreno-Risueno MA, Anderson CT, Benfey PN. Cell wall remodeling and vesicle trafficking mediate the root clock in Arabidopsis. Science 2020; 370:819-823. [PMID: 33184208 DOI: 10.1126/science.abb7250] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 10/01/2020] [Indexed: 12/31/2022]
Abstract
In Arabidopsis thaliana, lateral roots initiate in a process preceded by periodic gene expression known as the root clock. We identified the vesicle-trafficking regulator GNOM and its suppressor, ADENOSINE PHOSPHATE RIBOSYLATION FACTOR GTPase ACTIVATION PROTEIN DOMAIN3, as root clock regulators. GNOM is required for the proper distribution of pectin, a mediator of intercellular adhesion, whereas the pectin esterification state is essential for a functional root clock. In sites of lateral root primordia emergence, both esterified and de-esterified pectin variants are differentially distributed. Using a reverse-genetics approach, we show that genes controlling pectin esterification regulate the root clock and lateral root initiation. These results indicate that the balance between esterified and de-esterified pectin states is essential for proper root clock function and the subsequent initiation of lateral root primordia.
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Affiliation(s)
- Guy Wachsman
- Howard Hughes Medical Institute, Duke University, Durham, NC 27708, USA.,Department of Biology, Duke University, Durham, NC 27708, USA
| | - Jingyuan Zhang
- Department of Biology, Duke University, Durham, NC 27708, USA
| | - Miguel A Moreno-Risueno
- Centro de Biotecnología y Genómica de Plantas (Universidad Politécnica de Madrid - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria), 28223 Pozuelo de Alarcón (Madrid), Spain
| | - Charles T Anderson
- Department of Biology, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Philip N Benfey
- Howard Hughes Medical Institute, Duke University, Durham, NC 27708, USA. .,Department of Biology, Duke University, Durham, NC 27708, USA
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25
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García-Gómez P, Bahaji A, Gámez-Arcas S, Muñoz FJ, Sánchez-López ÁM, Almagro G, Baroja-Fernández E, Ameztoy K, De Diego N, Ugena L, Spíchal L, Doležal K, Hajirezaei MR, Romero LC, García I, Pozueta-Romero J. Volatiles from the fungal phytopathogen Penicillium aurantiogriseum modulate root metabolism and architecture through proteome resetting. PLANT, CELL & ENVIRONMENT 2020; 43:2551-2570. [PMID: 32515071 DOI: 10.1111/pce.13817] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 05/25/2020] [Accepted: 05/28/2020] [Indexed: 05/19/2023]
Abstract
Volatile compounds (VCs) emitted by the fungal phytopathogen Penicillium aurantiogriseum promote root growth and developmental changes in Arabidopsis. Here we characterised the metabolic and molecular responses of roots to fungal volatiles. Proteomic analyses revealed that these compounds reduce the levels of aquaporins, the iron carrier IRT1 and apoplastic peroxidases. Fungal VCs also increased the levels of enzymes involved in the production of mevalonate (MVA)-derived isoprenoids, nitrogen assimilation and conversion of methionine to ethylene and cyanide. Consistently, fungal VC-treated roots accumulated high levels of hydrogen peroxide (H2 O2 ), MVA-derived cytokinins, ethylene, cyanide and long-distance nitrogen transport amino acids. qRT-PCR analyses showed that many proteins differentially expressed by fungal VCs are encoded by VC non-responsive genes. Expression patterns of hormone reporters and developmental characterisation of mutants provided evidence for the involvement of cyanide scavenging and enhanced auxin, ethylene, cytokinin and H2 O2 signalling in the root architecture changes promoted by fungal VCs. Our findings show that VCs from P. aurantiogriseum modify root metabolism and architecture, and improve nutrient and water use efficiencies through transcriptionally and non-transcriptionally regulated proteome resetting mechanisms. Some of these mechanisms are subject to long-distance regulation by photosynthesis and differ from those triggered by VCs emitted by beneficial microorganisms.
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Affiliation(s)
- Pablo García-Gómez
- Instituto de Agrobiotecnología (Consejo Superior de Investigaciones Científicas/Gobierno de Navarra), Mutilva, 31192, Spain
| | - Abdellatif Bahaji
- Instituto de Agrobiotecnología (Consejo Superior de Investigaciones Científicas/Gobierno de Navarra), Mutilva, 31192, Spain
| | - Samuel Gámez-Arcas
- Instituto de Agrobiotecnología (Consejo Superior de Investigaciones Científicas/Gobierno de Navarra), Mutilva, 31192, Spain
| | - Francisco José Muñoz
- Instituto de Agrobiotecnología (Consejo Superior de Investigaciones Científicas/Gobierno de Navarra), Mutilva, 31192, Spain
| | - Ángela María Sánchez-López
- Instituto de Agrobiotecnología (Consejo Superior de Investigaciones Científicas/Gobierno de Navarra), Mutilva, 31192, Spain
| | - Goizeder Almagro
- Instituto de Agrobiotecnología (Consejo Superior de Investigaciones Científicas/Gobierno de Navarra), Mutilva, 31192, Spain
| | - Edurne Baroja-Fernández
- Instituto de Agrobiotecnología (Consejo Superior de Investigaciones Científicas/Gobierno de Navarra), Mutilva, 31192, Spain
| | - Kinia Ameztoy
- Instituto de Agrobiotecnología (Consejo Superior de Investigaciones Científicas/Gobierno de Navarra), Mutilva, 31192, Spain
| | - Nuria De Diego
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Olomouc, CZ-78371, Czech Republic
| | - Lydia Ugena
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Olomouc, CZ-78371, Czech Republic
| | - Lukáš Spíchal
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Olomouc, CZ-78371, Czech Republic
| | - Karel Doležal
- Department of Chemical Biology and Genetics, Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University, Olomouc, CZ-78371, Czech Republic
| | | | - Luis C Romero
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Sevilla, 41092, Spain
| | - Irene García
- Instituto de Bioquímica Vegetal y Fotosíntesis, Consejo Superior de Investigaciones Científicas and Universidad de Sevilla, Sevilla, 41092, Spain
| | - Javier Pozueta-Romero
- Instituto de Agrobiotecnología (Consejo Superior de Investigaciones Científicas/Gobierno de Navarra), Mutilva, 31192, Spain
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26
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Ahmed J, Mercx S, Boutry M, Chaumont F. Evolutionary and Predictive Functional Insights into the Aquaporin Gene Family in the Allotetraploid Plant Nicotiana tabacum. Int J Mol Sci 2020; 21:E4743. [PMID: 32635213 PMCID: PMC7370101 DOI: 10.3390/ijms21134743] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 06/26/2020] [Accepted: 07/01/2020] [Indexed: 12/22/2022] Open
Abstract
Aquaporins (AQPs) are a class of integral membrane proteins that facilitate the membrane diffusion of water and other small solutes. Nicotiana tabacum is an important model plant, and its allotetraploid genome has recently been released, providing us with the opportunity to analyze the AQP gene family and its evolution. A total of 88 full-length AQP genes were identified in the N. tabacum genome, and the encoding proteins were assigned into five subfamilies: 34 plasma membrane intrinsic proteins (PIPs); 27 tonoplast intrinsic proteins (TIPs); 20 nodulin26-like intrinsic proteins (NIPs); 3 small basic intrinsic proteins (SIPs); 4 uncharacterized X intrinsic proteins (XIPs), including two splice variants. We also analyzed the genomes of two N. tabacum ancestors, Nicotiana tomentosiformis and Nicotiana sylvestris, and identified 49 AQP genes in each species. Functional prediction, based on the substrate specificity-determining positions (SDPs), revealed significant differences in substrate specificity among the AQP subfamilies. Analysis of the organ-specific AQP expression levels in the N. tabacum plant and RNA-seq data of N. tabacum bright yellow-2 suspension cells indicated that many AQPs are simultaneously expressed, but differentially, according to the organs or the cells. Altogether, these data constitute an important resource for future investigations of the molecular, evolutionary, and physiological functions of AQPs in N. tabacum.
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Affiliation(s)
| | | | | | - François Chaumont
- Louvain Institute of Biomolecular Science and Technology, UCLouvain, Croix du Sud 4-L7.07.14, B-1348 Louvain-la-Neuve, Belgium; (J.A.); (S.M.); (M.B.)
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27
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De Rosa A, Watson-Lazowski A, Evans JR, Groszmann M. Genome-wide identification and characterisation of Aquaporins in Nicotiana tabacum and their relationships with other Solanaceae species. BMC PLANT BIOLOGY 2020; 20:266. [PMID: 32517797 PMCID: PMC7285608 DOI: 10.1186/s12870-020-02412-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 04/28/2020] [Indexed: 05/25/2023]
Abstract
BACKGROUND Cellular membranes are dynamic structures, continuously adjusting their composition, allowing plants to respond to developmental signals, stresses, and changing environments. To facilitate transmembrane transport of substrates, plant membranes are embedded with both active and passive transporters. Aquaporins (AQPs) constitute a major family of membrane spanning channel proteins that selectively facilitate the passive bidirectional passage of substrates across biological membranes at an astonishing 108 molecules per second. AQPs are the most diversified in the plant kingdom, comprising of five major subfamilies that differ in temporal and spatial gene expression, subcellular protein localisation, substrate specificity, and post-translational regulatory mechanisms; collectively providing a dynamic transportation network spanning the entire plant. Plant AQPs can transport a range of solutes essential for numerous plant processes including, water relations, growth and development, stress responses, root nutrient uptake, and photosynthesis. The ability to manipulate AQPs towards improving plant productivity, is reliant on expanding our insight into the diversity and functional roles of AQPs. RESULTS We characterised the AQP family from Nicotiana tabacum (NtAQPs; tobacco), a popular model system capable of scaling from the laboratory to the field. Tobacco is closely related to major economic crops (e.g. tomato, potato, eggplant and peppers) and itself has new commercial applications. Tobacco harbours 76 AQPs making it the second largest characterised AQP family. These fall into five distinct subfamilies, for which we characterised phylogenetic relationships, gene structures, protein sequences, selectivity filter compositions, sub-cellular localisation, and tissue-specific expression. We also identified the AQPs from tobacco's parental genomes (N. sylvestris and N. tomentosiformis), allowing us to characterise the evolutionary history of the NtAQP family. Assigning orthology to tomato and potato AQPs allowed for cross-species comparisons of conservation in protein structures, gene expression, and potential physiological roles. CONCLUSIONS This study provides a comprehensive characterisation of the tobacco AQP family, and strengthens the current knowledge of AQP biology. The refined gene/protein models, tissue-specific expression analysis, and cross-species comparisons, provide valuable insight into the evolutionary history and likely physiological roles of NtAQPs and their Solanaceae orthologs. Collectively, these results will support future functional studies and help transfer basic research to applied agriculture.
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Affiliation(s)
- Annamaria De Rosa
- ARC Centre of Excellence for Translational Photosynthesis, Research School of Biology, Australian National University, ACT, Canberra, 2601, Australia
| | - Alexander Watson-Lazowski
- ARC Centre of Excellence for Translational Photosynthesis, Hawkesbury Institute for the Environment, Western Sydney University, Sydney, NSW, 2751, Australia
| | - John R Evans
- ARC Centre of Excellence for Translational Photosynthesis, Research School of Biology, Australian National University, ACT, Canberra, 2601, Australia
| | - Michael Groszmann
- ARC Centre of Excellence for Translational Photosynthesis, Research School of Biology, Australian National University, ACT, Canberra, 2601, Australia.
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28
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Wachsman G, Benfey PN. Lateral Root Initiation: The Emergence of New Primordia Following Cell Death. Curr Biol 2020; 30:R121-R122. [PMID: 32017881 DOI: 10.1016/j.cub.2019.12.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The development of lateral roots requires multiple mechanisms that act together for accurate spatiotemporal emergence of the new organ. A new paper shows how cell death in overlying endodermis cells contributes to the formation of new lateral root primordia.
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Affiliation(s)
- Guy Wachsman
- Howard Hughes Medical Institute, Duke University, Durham, NC 27708, USA
| | - Philip N Benfey
- Howard Hughes Medical Institute, Duke University, Durham, NC 27708, USA.
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29
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Sarkar D, Rovenich H, Jeena G, Nizam S, Tissier A, Balcke GU, Mahdi LK, Bonkowski M, Langen G, Zuccaro A. The inconspicuous gatekeeper: endophytic Serendipita vermifera acts as extended plant protection barrier in the rhizosphere. THE NEW PHYTOLOGIST 2019; 224:886-901. [PMID: 31074884 DOI: 10.1111/nph.15904] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 04/26/2019] [Indexed: 05/21/2023]
Abstract
In nature, beneficial and pathogenic fungi often simultaneously colonise plants. Despite substantial efforts to understand the composition of natural plant-microbe communities, the mechanisms driving such multipartite interactions remain largely unknown. Here we address how the interaction between the beneficial root endophyte Serendipita vermifera and the pathogen Bipolaris sorokiniana affects fungal behaviour and determines barley host responses using a gnotobiotic soil-based split-root system. Fungal confrontation in soil resulted in induction of B. sorokiniana genes involved in secondary metabolism and a significant repression of genes encoding putative effectors. In S. vermifera, genes encoding hydrolytic enzymes were strongly induced. This antagonistic response was not activated during the tripartite interaction in barley roots. Instead, we observed a specific induction of S. vermifera genes involved in detoxification and redox homeostasis. Pathogen infection but not endophyte colonisation resulted in substantial host transcriptional reprogramming and activation of defence. In the presence of S. vermifera, pathogen infection and disease symptoms were significantly reduced despite no marked alterations of the plant transcriptional response. The activation of stress response genes and concomitant repression of putative effector gene expression in B. sorokiniana during confrontation with the endophyte suggest a reduction of the pathogen's virulence potential before host plant infection.
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Affiliation(s)
- Debika Sarkar
- Botanical Institute, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, 50674, Cologne, Germany
| | - Hanna Rovenich
- Botanical Institute, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, 50674, Cologne, Germany
| | - Ganga Jeena
- Botanical Institute, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, 50674, Cologne, Germany
| | - Shadab Nizam
- Botanical Institute, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, 50674, Cologne, Germany
| | - Alain Tissier
- Department of Cell and Metabolic Biology, Institute of Plant Biochemistry, 06120, Halle (Saale), Germany
| | - Gerd U Balcke
- Department of Cell and Metabolic Biology, Institute of Plant Biochemistry, 06120, Halle (Saale), Germany
| | - Lisa K Mahdi
- Botanical Institute, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, 50674, Cologne, Germany
| | - Michael Bonkowski
- Institute of Zoology, Terrestrial Ecology, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, 50674, Cologne, Germany
| | - Gregor Langen
- Botanical Institute, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, 50674, Cologne, Germany
| | - Alga Zuccaro
- Botanical Institute, Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, 50674, Cologne, Germany
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Identification of Fusarium oxysporum f. sp. cubense tropical race 4 (Foc TR4) responsive miRNAs in banana root. Sci Rep 2019; 9:13682. [PMID: 31548557 PMCID: PMC6757108 DOI: 10.1038/s41598-019-50130-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/06/2019] [Indexed: 12/22/2022] Open
Abstract
The fungus, Fusarium oxysporum f. sp. cubense (Foc), is the causal agent of Fusarium wilt disease, which is the most serious disease affecting the whole banana industry. Although extensive studies have characterized many Foc-responsive genes in banana, the molecular mechanisms on microRNA level underlying both banana defense and Foc pathogenesis are not yet fully understood. In this study, we aimed to reveal the role of miRNA during banana-Foc TR4 interactions. Illumina sequencing was used to reveal the changes in small RNAome profiles in roots of Foc TR4-inoculated ‘Tianbaojiao’ banana (Musa acuminata cv. Tianbaojiao) in the early stages (i.e. 5 h, 10 h and 25 h post Foc TR4 inoculation, respectively). The expression of some differentially expressed (DE) miRNAs and their predicted target genes was studied by using quantitative real time PCR (qRT-PCR). Totally, 254 known miRNAs from 31 miRNA families and 28 novel miRNAs were identified. Differential expression analysis identified 84, 77 and 74 DE miRNAs at the three respective Foc TR4 infection time points compared with control healthy banana (CK). GO and KEGG analysis revealed that most of the predicted target genes of DE miRNAs (DET) were implicated in peroxisome, fatty acid metabolism, auxin-activated signaling pathway, sulfur metabolism, lignin metabolism and so on, and many known stress responsive genes were identified to be DETs. Moreover, expected inverse correlations were confirmed between some miRNA and their corresponding target genes by using qRT-PCR analysis. Our study revealed that miRNA play important regulatory roles during the banana-Foc TR4 interaction by regulating peroxidase, fatty acid metabolism, auxin signaling, sulfur metabolism, lignin metabolism related genes and many known stress responsive genes.
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Banda J, Bellande K, von Wangenheim D, Goh T, Guyomarc'h S, Laplaze L, Bennett MJ. Lateral Root Formation in Arabidopsis: A Well-Ordered LRexit. TRENDS IN PLANT SCIENCE 2019; 24:826-839. [PMID: 31362861 DOI: 10.1016/j.tplants.2019.06.015] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 06/07/2019] [Accepted: 06/28/2019] [Indexed: 05/04/2023]
Abstract
Lateral roots (LRs) are crucial for increasing the surface area of root systems to explore heterogeneous soil environments. Major advances have recently been made in the model plant arabidopsis (Arabidopsis thaliana) to elucidate the cellular basis of LR development and the underlying gene regulatory networks (GRNs) that control the morphogenesis of the new root organ. This has provided a foundation for understanding the sophisticated adaptive mechanisms that regulate how plants pattern their root branching to match the spatial availability of resources such as water and nutrients in their external environment. We review new insights into the molecular, cellular, and environmental regulation of LR development in arabidopsis.
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Affiliation(s)
- Jason Banda
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, UK
| | - Kevin Bellande
- Unité Mixte de Recherche (UMR) Diversité, Adaptation, et Developpement des Plantes (DIADE), Institut de Recherche pour le Développement (IRD), Université de Montpellier, Montpellier, France
| | - Daniel von Wangenheim
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, UK
| | - Tatsuaki Goh
- Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan
| | - Soazig Guyomarc'h
- Unité Mixte de Recherche (UMR) Diversité, Adaptation, et Developpement des Plantes (DIADE), Institut de Recherche pour le Développement (IRD), Université de Montpellier, Montpellier, France
| | - Laurent Laplaze
- Unité Mixte de Recherche (UMR) Diversité, Adaptation, et Developpement des Plantes (DIADE), Institut de Recherche pour le Développement (IRD), Université de Montpellier, Montpellier, France.
| | - Malcolm J Bennett
- Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, UK.
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Ding L, Uehlein N, Kaldenhoff R, Guo S, Zhu Y, Kai L. Aquaporin PIP2;1 affects water transport and root growth in rice (Oryza sativa L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 139:152-160. [PMID: 30889480 DOI: 10.1016/j.plaphy.2019.03.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 02/25/2019] [Accepted: 03/09/2019] [Indexed: 05/12/2023]
Abstract
Aquaporins are key proteins in regulating water transport, plant growth and development. In this study, we investigated the function of plasma membrane intrinsic proteins (PIPs) in both yeast (Saccharomyces cerevisiae) and rice (Oryza sativa cv. Nipponbare). Three OsPIP1s (OsPIP1;1, OsPIP1;2 and OsPIP1;3) and four OsPIP2s (OsPIP2;1, OsPIP2;3, OsPIP2;4 and OsPIP2;5) were successfully amplified and expressed in yeast. Overexpression of OsPIP2s, especially OsPIP2;1, increased yeast membrane water permeability (Pf). Root hydraulic conductivity (Lpr) was decreased by approximately four-fold in OsPIP2; 1 RNAi knock-down plants, resulting in a decrease in OsPIP2;1 expression levels of 70% and 50% in line 3 and line 4, respectively, compared to the wild type (WT) plants. No significant differences in the photosynthetic rate, transpiration rate, mesophyll conductance and chloroplast CO2 concentration were observed between WT and OsPIP2; 1 RNAi plants. Higher stomatal conductance and intercellular CO2 concentrations were observed in line 3 plants than in WT plants. In addition, lower root total length, surface area, root volume and fewer root tips were found in the RNAi plants than in the WT plants. Finally, the RNAi plants were more sensitive to drought stress. The results indicate that PIP2; 1 plays an important role in the regulation of water transport and plant growth.
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Affiliation(s)
- Lei Ding
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China; Louvain Institute of Biomolecular Science and Technology, Université catholique de Louvain, Louvain-la-Neuve, B-1348, Belgium
| | - Norbert Uehlein
- Department of Biology, Applied Plant Sciences, Technische Universität Darmstadt, Schnittspahn Strasse 10, D-64287, Darmstadt, Germany
| | - Ralf Kaldenhoff
- Department of Biology, Applied Plant Sciences, Technische Universität Darmstadt, Schnittspahn Strasse 10, D-64287, Darmstadt, Germany
| | - Shiwei Guo
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yiyong Zhu
- Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lei Kai
- Department of Biology, Applied Plant Sciences, Technische Universität Darmstadt, Schnittspahn Strasse 10, D-64287, Darmstadt, Germany; Department of Cellular and Molecular Biophysics Max Planck Institute of Biochemistry Am Klopferspitz 18, 82152, Martinsried, Germany; The Key Laboratory of Biotechnology for Medicinal Plants of Jiangsu Province, Jiangsu Key Laboratory of Phylogenomics and Comparative Genomics, School of Life Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, China.
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Scharwies JD, Dinneny JR. Water transport, perception, and response in plants. JOURNAL OF PLANT RESEARCH 2019; 132:311-324. [PMID: 30747327 DOI: 10.1007/s10265-019-01089-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 01/16/2019] [Indexed: 05/09/2023]
Abstract
Sufficient water availability in the environment is critical for plant survival. Perception of water by plants is necessary to balance water uptake and water loss and to control plant growth. Plant physiology and soil science research have contributed greatly to our understanding of how water moves through soil, is taken up by roots, and moves to leaves where it is lost to the atmosphere by transpiration. Water uptake from the soil is affected by soil texture itself and soil water content. Hydraulic resistances for water flow through soil can be a major limitation for plant water uptake. Changes in water supply and water loss affect water potential gradients inside plants. Likewise, growth creates water potential gradients. It is known that plants respond to changes in these gradients. Water flow and loss are controlled through stomata and regulation of hydraulic conductance via aquaporins. When water availability declines, water loss is limited through stomatal closure and by adjusting hydraulic conductance to maintain cell turgor. Plants also adapt to changes in water supply by growing their roots towards water and through refinements to their root system architecture. Mechanosensitive ion channels, aquaporins, proteins that sense the cell wall and cell membrane environment, and proteins that change conformation in response to osmotic or turgor changes could serve as putative sensors. Future research is required to better understand processes in the rhizosphere during soil drying and how plants respond to spatial differences in water availability. It remains to be investigated how changes in water availability and water loss affect different tissues and cells in plants and how these biophysical signals are translated into chemical signals that feed into signaling pathways like abscisic acid response or organ development.
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Affiliation(s)
- Johannes Daniel Scharwies
- Department of Plant Biology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA
- Department of Biology, Stanford University, 371 Serra Mall, Stanford, CA, 94305, USA
| | - José R Dinneny
- Department of Plant Biology, Carnegie Institution for Science, 260 Panama Street, Stanford, CA, 94305, USA.
- Department of Biology, Stanford University, 371 Serra Mall, Stanford, CA, 94305, USA.
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Shivaraj SM, Deshmukh R, Sonah H, Bélanger RR. Identification and characterization of aquaporin genes in Arachis duranensis and Arachis ipaensis genomes, the diploid progenitors of peanut. BMC Genomics 2019; 20:222. [PMID: 30885116 PMCID: PMC6423786 DOI: 10.1186/s12864-019-5606-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 03/13/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Aquaporins (AQPs) facilitate transport of water and small solutes across cell membranes and play an important role in different physiological processes in plants. Despite their importance, limited data is available about AQP distribution and function in the economically important oilseed crop peanut, Arachis hypogea (AABB). The present study reports the identification and structural and expression analysis of the AQPs found in the diploid progenitor genomes of A. hypogea i.e. Arachis duranensis (AA) and Arachis ipaensis (BB). RESULTS Genome-wide analysis revealed the presence of 32 and 36 AQPs in A. duranensis and A. ipaensis, respectively. Phylogenetic analysis showed similar numbers of AQPs clustered in five distinct subfamilies including the plasma membrane intrinsic proteins (PIPs), the tonoplast intrinsic proteins (TIPs), the nodulin 26-like intrinsic proteins (NIPs), the small basic intrinsic proteins (SIPs), and the uncharacterized intrinsic proteins (XIPs). A notable exception was the XIP subfamily where XIP1 group was observed only in A. ipaensis genome. Protein structure evaluation showed a hydrophilic aromatic/arginine (ar/R) selectivity filter (SF) in PIPs whereas other subfamilies mostly contained a hydrophobic ar/R SF. Both genomes contained one NIP2 with a GSGR SF indicating a conserved ability within the genus to uptake silicon. Analysis of RNA-seq data from A. hypogea revealed a similar expression pattern for the different AQP paralogs of AA and BB genomes. The TIP3s showed seed-specific expression while the NIP1s' expression was confined to roots and root nodules. CONCLUSIONS The identification and the phylogenetic analysis of AQPs in both Arachis species revealed the presence of all five sub-families of AQPs. Within the NIP subfamily, the presence of a NIP2 in both genomes supports a conserved ability to absorb Si within plants of the genus. The global expression profile of AQPs in A. hypogea revealed a similar pattern of AQP expression regardless of the subfamilies or the genomes. The tissue-specific expression of AQPs suggests an important role in the development and function of the respective organs. The AQPs identified in the present study will serve as a resource for further characterization and possible exploitation of AQPs to understand their physiological role in A. hypogea.
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Affiliation(s)
- S. M. Shivaraj
- Département de phytologie–Faculté des Sciences de l’agriculture et de l’alimentation, Université Laval, 2425 rue de l’Agriculture, Québec City, QC G1V 0A6 Canada
| | - Rupesh Deshmukh
- National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Humira Sonah
- National Agri-Food Biotechnology Institute (NABI), Mohali, India
| | - Richard R. Bélanger
- Département de phytologie–Faculté des Sciences de l’agriculture et de l’alimentation, Université Laval, 2425 rue de l’Agriculture, Québec City, QC G1V 0A6 Canada
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Marsollier AC, Ingram G. Getting physical: invasive growth events during plant development. CURRENT OPINION IN PLANT BIOLOGY 2018; 46:8-17. [PMID: 29981931 DOI: 10.1016/j.pbi.2018.06.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/04/2018] [Accepted: 06/07/2018] [Indexed: 05/10/2023]
Abstract
Plant cells are enclosed in cell walls that weld them together, meaning that cells rarely change neighbours. Nonetheless, invasive growth events play critical roles in plant development and are often key hubs for the integration of environmental and/or developmental signalling. Here we review cellular processes involved in three such events: lateral root emergence, pollen tube growth through stigma and style tissues, and embryo expansion through the endosperm (Figures 1-3). We consider processes such as regulation of water fluxes and cell turgor (driving growth), cell wall modifications (e.g. cell separation) and cell death (for creating space) within these three contexts with the aim of identifying key mechanisms implicated in providing a chemical and biophysical environments permitting invasive growth events.
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Affiliation(s)
- Anne-Charlotte Marsollier
- Université de Lyon, Laboratoire Reproduction et Développement des Plantes, ENS de lyon, CNRS, INRA, 46 Allée d'Italie, 69007 Lyon, France
| | - Gwyneth Ingram
- Université de Lyon, Laboratoire Reproduction et Développement des Plantes, ENS de lyon, CNRS, INRA, 46 Allée d'Italie, 69007 Lyon, France.
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Nagy M, Kéki S, Rácz D, Mathur J, Vereb G, Garda T, M-Hamvas M, Chaumont F, Bóka K, Böddi B, Freytag C, Vasas G, Máthé C. Novel fluorochromes label tonoplast in living plant cells and reveal changes in vacuolar organization after treatment with protein phosphatase inhibitors. PROTOPLASMA 2018; 255:829-839. [PMID: 29230547 DOI: 10.1007/s00709-017-1190-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 11/27/2017] [Indexed: 06/07/2023]
Abstract
The recently synthesized isocyanonaphtalene derivatives ACAIN and CACAIN are fluorochromes excitable at wavelengths of around 366 nm and bind cysteine-rich proteins with hydrophobic motifs. We show that these compounds preferentially label tonoplasts in living Arabidopsis and tobacco (Nicotiana tabacum SR1) cells. ACAIN-labeled membranes co-localized with the GFP signal in plants expressing GFP-δ-TIP (TIP2;1) (a tonoplast aquaporin) fusion protein. ACAIN preserved the dynamics of vacuolar structures. tip2;1 and triple tip1;1-tip1;2-tip2;1 knockout mutants showed weaker ACAIN signal in tonoplasts. The fluorochrome is also suitable for the labeling and detection of specific (cysteine-rich, hydrophobic) proteins from crude cell protein extracts following SDS-PAGE and TIP mutants show altered labeling patterns; however, it appears that ACAIN labels a large variety of tonoplast proteins. ACAIN/CACAIN could be used for the detection of altered vacuolar organization induced by the heptapeptide natural toxin microcystin-LR (MCY-LR), a potent inhibitor of both type 1 and 2A protein phosphatases and a ROS inducer. As revealed both in plants with GFP-TIP2;1 fusions and in wild-type (Columbia) plants labeled with ACAIN/CACAIN, MCY-LR induces the formation of small vesicles, concomitantly with the absence of the large vegetative vacuoles characteristic for differentiated cells. TEM studies of MCY-LR-treated Arabidopsis cells proved the presence of multimembrane vesicles, with characteristics of lytic vacuoles or autophagosomes. Moreover, MCY-LR is a stronger inducer of small vesicle formation than okadaic acid (which inhibits preferentially PP2A) and tautomycin (which inhibits preferentially PP1). ACAIN and CACAIN emerge as useful novel tools to study plant vacuole biogenesis and programmed cell death.
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Affiliation(s)
- Miklós Nagy
- Faculty of Science and Technology, Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, Debrecen, H-4032, Hungary
| | - Sándor Kéki
- Faculty of Science and Technology, Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, Debrecen, H-4032, Hungary
| | - Dávid Rácz
- Faculty of Science and Technology, Department of Applied Chemistry, University of Debrecen, Egyetem tér 1, Debrecen, H-4032, Hungary
| | - Jaideep Mathur
- Department of Molecular and Cellular Biology, Laboratory of Plant Development and Interactions, University of Guelph, 50 Stone Road, Guelph, ON, N1G2W1, Canada
| | - György Vereb
- Faculty of Medicine, Department of Biophysics and Cell Biology, University of Debrecen, Debrecen, Hungary
| | - Tamás Garda
- Faculty of Science and Technology, Department of Botany, University of Debrecen, Debrecen, Hungary
| | - Márta M-Hamvas
- Faculty of Science and Technology, Department of Botany, University of Debrecen, Debrecen, Hungary
| | - François Chaumont
- Institut des Sciences de la Vie, Université catholique de Louvain, B-1348, Louvain-la-Neuve, Belgium
| | - Károly Bóka
- ELTE Eötvös Loránd University, Department of Plant Anatomy, Institute of Biology, Faculty of Science, Pázmány P. s. 1/c, Budapest, H-1117, Hungary
| | - Béla Böddi
- ELTE Eötvös Loránd University, Department of Plant Anatomy, Institute of Biology, Faculty of Science, Pázmány P. s. 1/c, Budapest, H-1117, Hungary
| | - Csongor Freytag
- Faculty of Science and Technology, Department of Botany, University of Debrecen, Debrecen, Hungary
| | - Gábor Vasas
- Faculty of Science and Technology, Department of Botany, University of Debrecen, Debrecen, Hungary
| | - Csaba Máthé
- Faculty of Science and Technology, Department of Botany, University of Debrecen, Debrecen, Hungary.
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Laloux T, Junqueira B, Maistriaux LC, Ahmed J, Jurkiewicz A, Chaumont F. Plant and Mammal Aquaporins: Same but Different. Int J Mol Sci 2018; 19:E521. [PMID: 29419811 PMCID: PMC5855743 DOI: 10.3390/ijms19020521] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 01/31/2018] [Accepted: 02/01/2018] [Indexed: 02/06/2023] Open
Abstract
Aquaporins (AQPs) constitute an ancient and diverse protein family present in all living organisms, indicating a common ancient ancestor. However, during evolution, these organisms appear and evolve differently, leading to different cell organizations and physiological processes. Amongst the eukaryotes, an important distinction between plants and animals is evident, the most conspicuous difference being that plants are sessile organisms facing ever-changing environmental conditions. In addition, plants are mostly autotrophic, being able to synthesize carbohydrates molecules from the carbon dioxide in the air during the process of photosynthesis, using sunlight as an energy source. It is therefore interesting to analyze how, in these different contexts specific to both kingdoms of life, AQP function and regulation evolved. This review aims at highlighting similarities and differences between plant and mammal AQPs. Emphasis is given to the comparison of isoform numbers, their substrate selectivity, the regulation of the subcellular localization, and the channel activity.
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Affiliation(s)
- Timothée Laloux
- Institut des Sciences de la Vie, Université catholique de Louvain, Croix du Sud 4-L7.07.14, B-1348 Louvain-la Neuve, Belgium.
| | - Bruna Junqueira
- Institut des Sciences de la Vie, Université catholique de Louvain, Croix du Sud 4-L7.07.14, B-1348 Louvain-la Neuve, Belgium.
| | - Laurie C Maistriaux
- Institut des Sciences de la Vie, Université catholique de Louvain, Croix du Sud 4-L7.07.14, B-1348 Louvain-la Neuve, Belgium.
| | - Jahed Ahmed
- Institut des Sciences de la Vie, Université catholique de Louvain, Croix du Sud 4-L7.07.14, B-1348 Louvain-la Neuve, Belgium.
| | - Agnieszka Jurkiewicz
- Institut des Sciences de la Vie, Université catholique de Louvain, Croix du Sud 4-L7.07.14, B-1348 Louvain-la Neuve, Belgium.
| | - François Chaumont
- Institut des Sciences de la Vie, Université catholique de Louvain, Croix du Sud 4-L7.07.14, B-1348 Louvain-la Neuve, Belgium.
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Pang Y, Li J, Qi B, Tian M, Sun L, Wang X, Hao F. Aquaporin AtTIP5;1 as an essential target of gibberellins promotes hypocotyl cell elongation in Arabidopsis thaliana under excess boron stress. FUNCTIONAL PLANT BIOLOGY : FPB 2018; 45:305-314. [PMID: 32290954 DOI: 10.1071/fp16444] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 08/29/2017] [Indexed: 06/11/2023]
Abstract
Aquaporins play essential roles in growth and development including stem elongation in plants. Tonoplast aquaporin AtTIP5;1 has been proposed to positively regulate hypocotyl elongation under high concentrations of boron (high-B) in Arabidopsis thaliana (L.) Heynh. However, the mechanism underlying this process remains unanswered. Here, we show that paclobatrazol, an inhibitor of GA biosynthesis, significantly suppressed the hypocotyl cell elongation of wild-type (WT) seedlings, and more strongly suppressed that of AtTIP5;1 overexpressors under high-B stress. Two AtTIP5;1 null mutants displayed arrested elongation of cells in the upper part of hypocotyls compared with the WT in the presence of high-B or GA3. Moreover, paclobatrazol treatment completely inhibited the increases in AtTIP5;1 transcripts induced by high-B, whereas GA3 application upregulated AtTIP5;1 expression in the WT. In addition, treatment with high-B remarkably elevated the expression levels of GA3ox1, GA20ox1 and GA20ox2 - key biosynthesis genes of GAs - in WT seedlings. The GA3 and GA4 content also increased in WT seedlings grown in MS medium containing high-B. Additionally, application of high-B failed to enhance AtTIP5;1 expression in the double mutant rga-24-gai-t6 of DELLA genes. Together, these results suggest that AtTIP5;1 is an essential downstream target of GAs. High-B induces the accumulation of GAs, which activates AtTIP5;1 through modulation of the DELLA proteins Repressor of ga1-3 and GA-insensitive, further promoting hypocotyl elongation in A. thaliana.
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Affiliation(s)
- Yongqi Pang
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University, Kaifeng 475004, P.R. China
| | - Jintong Li
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University, Kaifeng 475004, P.R. China
| | - Bishu Qi
- North China Key Laboratory for Crop Germplasm Resources of Education Ministry, Agricultural University of Hebei, Baoding 071000, P.R. China
| | - Mi Tian
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University, Kaifeng 475004, P.R. China
| | - Lirong Sun
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University, Kaifeng 475004, P.R. China
| | - Xuechen Wang
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University, Kaifeng 475004, P.R. China
| | - Fushun Hao
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, College of Life Sciences, Henan University, Kaifeng 475004, P.R. China
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Stoeckle D, Thellmann M, Vermeer JE. Breakout-lateral root emergence in Arabidopsis thaliana. CURRENT OPINION IN PLANT BIOLOGY 2018; 41:67-72. [PMID: 28968512 DOI: 10.1016/j.pbi.2017.09.005] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/05/2017] [Accepted: 09/07/2017] [Indexed: 05/24/2023]
Abstract
Lateral roots are determinants of plant root system architecture. Besides providing anchorage, they are a plant's means to explore the soil environment for water and nutrients. Lateral roots form post-embryonically and initiate deep within the root. On its way to the surface, the newly formed organ needs to grow through three overlying cell layers; the endodermis, cortex and epidermis. A picture is emerging that a tight integration of chemical and mechanical signalling between the lateral root and the surrounding tissue is essential for proper organogenesis. Here we review the latest progress made towards our understanding of the fascinating biology underlying lateral root emergence in Arabidopsis.
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Affiliation(s)
- Dorothee Stoeckle
- Department of Plant and Microbial Biology, University of Zurich, Switzerland
| | - Martha Thellmann
- Department of Plant and Microbial Biology, University of Zurich, Switzerland
| | - Joop Em Vermeer
- Department of Plant and Microbial Biology, University of Zurich, Switzerland; Cell Biology and Developmental Biology, Wageningen University, The Netherlands.
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40
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Ötvös K, Benková E. Spatiotemporal mechanisms of root branching. Curr Opin Genet Dev 2017; 45:82-89. [DOI: 10.1016/j.gde.2017.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/14/2017] [Accepted: 03/16/2017] [Indexed: 10/19/2022]
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Deng Q, Wang X, Zhang D, Wang X, Feng C, Xu S. BRS1 Function in Facilitating Lateral Root Emergence in Arabidopsis. Int J Mol Sci 2017; 18:ijms18071549. [PMID: 28718794 PMCID: PMC5536037 DOI: 10.3390/ijms18071549] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 07/10/2017] [Accepted: 07/12/2017] [Indexed: 11/16/2022] Open
Abstract
The BRS1 (BRI1 Suppressor 1) gene encodes a serine carboxypeptidase that plays a critical role in the brassinosteroid signaling pathway. However, its specific biological function remains unclear. In this study, the developmental role of BRS1 was investigated in Arabidopsis thaliana. We found that overexpressing BRS1 resulted in significantly more lateral roots in different Arabidopsis ecotypes (WS2 and Col-0) and in brassinosteroid mutants (bri1-5 and det2-28). Further research showed that BRS1 facilitates the process whereby lateral root primordia break through the endodermis, cortex, and epidermis. Consistent with this, BRS1 was found to be highly expressed in the root endodermis and accumulated in the extracellular space around the dome of the lateral root primordia. Taken together, these results highlight the role of BRS1 in the process of lateral root emergence and provide new insight into the role of serine carboxypeptidases in plant root development.
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Affiliation(s)
- Qian Deng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China.
| | - Xue Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China.
| | - Dongzhi Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Xiaoming Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China.
| | - Cuizhu Feng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China.
| | - Shengbao Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, China.
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Sonah H, Deshmukh RK, Labbé C, Bélanger RR. Analysis of aquaporins in Brassicaceae species reveals high-level of conservation and dynamic role against biotic and abiotic stress in canola. Sci Rep 2017; 7:2771. [PMID: 28584277 PMCID: PMC5459863 DOI: 10.1038/s41598-017-02877-9] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 04/19/2017] [Indexed: 01/11/2023] Open
Abstract
Aquaporins (AQPs) are of vital importance in the cellular transport system of all living organisms. In this study, genome-wide identification, distribution, and characterization of AQPs were determined in Arabidopsis lyrata, Capsella grandiflora, C. rubella, Eutrema salsugineum, Brassica rapa, B. oleracea, and B. napus (canola). Classification and phylogeny of AQPs revealed the loss of XIPs and NIP-IIIs in all species. Characterization of distinctive AQP features showed a high level of conservation in spacing between NPA-domains, and selectivity filters. Interestingly, TIP3s were found to be highly expressed in developing seeds, suggesting their role in seed desiccation. Analysis of available RNA-seq data obtained under biotic and abiotic stresses led to the identification of AQPs involved in stress tolerance mechanisms in canola. In addition, analysis of the effect of ploidy level, and resulting gene dose effect performed with the different combinations of Brassica A and C genomes revealed that more than 70% of AQPs expression were dose-independent, thereby supporting their role in stress alleviation. This first in-depth characterization of Brassicaceae AQPs highlights transport mechanisms and related physiological processes that could be exploited in breeding programs of stress-tolerant cultivars.
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Affiliation(s)
- Humira Sonah
- Département de phytologie-Faculté des Sciences de l'agriculture et de l'alimentation, Université Laval, Québec City, QC, Canada
| | - Rupesh K Deshmukh
- Département de phytologie-Faculté des Sciences de l'agriculture et de l'alimentation, Université Laval, Québec City, QC, Canada
| | - Caroline Labbé
- Département de phytologie-Faculté des Sciences de l'agriculture et de l'alimentation, Université Laval, Québec City, QC, Canada
| | - Richard R Bélanger
- Département de phytologie-Faculté des Sciences de l'agriculture et de l'alimentation, Université Laval, Québec City, QC, Canada.
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Zargar SM, Nagar P, Deshmukh R, Nazir M, Wani AA, Masoodi KZ, Agrawal GK, Rakwal R. Aquaporins as potential drought tolerance inducing proteins: Towards instigating stress tolerance. J Proteomics 2017; 169:233-238. [PMID: 28412527 DOI: 10.1016/j.jprot.2017.04.010] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 03/22/2017] [Accepted: 04/04/2017] [Indexed: 11/18/2022]
Abstract
Aquaporins (AQPs) are primarily involved in maintaining cellular water homeostasis. Their role in diverse physiological processes has fascinated plant scientists for more than a decade, particularly concerning abiotic stresses. Increasing examples of evidence in various crop plants indicate that the AQPs are responsible for precise regulation of water movement and consequently play a crucial role in the drought stress tolerance. Since drought is one of the major abiotic stresses affecting agricultural production worldwide, it has become a critical agenda to focus research on the development of drought tolerant crop plants. AQPs can act as key candidate molecules to confront this issue. Hence, there is an important need to explore the potential of AQPs by understanding the molecular mechanisms and pathways through which they induce drought tolerance. Moreover, the signalling network/s involved in such pathways needs to be mined and understood correctly, and that may lead to the development of drought tolerance in crop plants. In the present review, opportunity and challenges regarding the efficient utilization of AQP-related information is presented and discussed. The complied information and the discussion will be helpful for designing future experiments and to set the specific goals for the enhancement of drought tolerance in crop plants. Biological Significance Knowledge on the role of AQPs in maintaining cellular water homeostasis has given new hope for developing drought tolerance in crop plants. Since drought is one of the major abiotic stresses affecting agricultural production worldwide, it has become a critical agenda to focus research on the development of drought-tolerant crop plants. AQPs can act as key candidate molecules to solve this problem through genetic engineering. For this, it is important to understand the molecular mechanisms and inter-related pathways through which AQPs induce drought tolerance and to explore the signaling network/s involved in such pathways.
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Affiliation(s)
- Sajad Majeed Zargar
- Division of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences & Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir 190025, India.
| | - Preeti Nagar
- Faculty of Life Sciences and Biotechnology, South Asian University, New Delhi 110021, India
| | - Rupesh Deshmukh
- Departement de Phytologie, Université Laval, Quebec City, Canada
| | - Muslima Nazir
- Division of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences & Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir 190025, India
| | - Aijaz Ahmad Wani
- Department of Botany, University of Kashmir, Hazratbal, Srinagar, Jammu and Kashmir 190006, India
| | - Khalid Zaffar Masoodi
- Division of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences & Technology of Kashmir, Shalimar, Srinagar, Jammu and Kashmir 190025, India
| | - Ganesh Kumar Agrawal
- Research Laboratory for Biotechnology and Biochemistry (RLABB), GPO 13265, Kathmandu, Nepal; GRADE (Global Research Arch for Developing Education) Academy Pvt. Ltd., Adarsh Nagar-13, Birgunj, Nepal
| | - Randeep Rakwal
- Research Laboratory for Biotechnology and Biochemistry (RLABB), GPO 13265, Kathmandu, Nepal; GRADE (Global Research Arch for Developing Education) Academy Pvt. Ltd., Adarsh Nagar-13, Birgunj, Nepal; Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8574, Ibaraki, Japan
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Rodrigues MI, Takeda AAS, Bravo JP, Maia IG. The Eucalyptus Tonoplast Intrinsic Protein (TIP) Gene Subfamily: Genomic Organization, Structural Features, and Expression Profiles. FRONTIERS IN PLANT SCIENCE 2016; 7:1810. [PMID: 27965702 PMCID: PMC5127802 DOI: 10.3389/fpls.2016.01810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 11/16/2016] [Indexed: 06/06/2023]
Abstract
Plant aquaporins are water channels implicated in various physiological processes, including growth, development and adaptation to stress. In this study, the Tonoplast Intrinsic Protein (TIP) gene subfamily of Eucalyptus, an economically important woody species, was investigated and characterized. A genome-wide survey of the Eucalyptus grandis genome revealed the presence of eleven putative TIP genes (referred as EgTIP), which were individually assigned by phylogeny to each of the classical TIP1-5 groups. Homology modeling confirmed the presence of the two highly conserved NPA (Asn-Pro-Ala) motifs in the identified EgTIPs. Residue variations in the corresponding selectivity filters, that might reflect differences in EgTIP substrate specificity, were observed. All EgTIP genes, except EgTIP5.1, were transcribed and the majority of them showed organ/tissue-enriched expression. Inspection of the EgTIP promoters revealed the presence of common cis-regulatory elements implicated in abiotic stress and hormone responses pointing to an involvement of the identified genes in abiotic stress responses. In line with these observations, additional gene expression profiling demonstrated increased expression under polyethylene glycol-imposed osmotic stress. Overall, the results obtained suggest that these novel EgTIPs might be functionally implicated in eucalyptus adaptation to stress.
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Affiliation(s)
- Marcela I. Rodrigues
- Department of Genetics, Institute of Biosciences of Botucatu, São Paulo State UniversityBotucatu, Brazil
| | - Agnes A. S. Takeda
- Department of Physics and Biophysics, Institute of Biosciences of Botucatu, São Paulo State UniversityBotucatu, Brazil
- Institute of Biotechnology, São Paulo State UniversityBotucatu, Brazil
| | - Juliana P. Bravo
- Department of Genetics, Institute of Biosciences of Botucatu, São Paulo State UniversityBotucatu, Brazil
| | - Ivan G. Maia
- Department of Genetics, Institute of Biosciences of Botucatu, São Paulo State UniversityBotucatu, Brazil
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