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Li C, Liu H, Qin M, Tan YJ, Ou XL, Chen XY, Wei Y, Zhang ZJ, Lei M. RNA editing events and expression profiles of mitochondrial protein-coding genes in the endemic and endangered medicinal plant, Corydalis saxicola. FRONTIERS IN PLANT SCIENCE 2024; 15:1332460. [PMID: 38379941 PMCID: PMC10876856 DOI: 10.3389/fpls.2024.1332460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/23/2024] [Indexed: 02/22/2024]
Abstract
Corydalis saxicola, an endangered medicinal plant endemic to karst habitats, is widely used in Traditional Chinese Medicine to treat hepatitis, abdominal pain, bleeding hemorrhoids and other conditions. However, to date, the mitochondrial (mt) genome of C. saxicola has not been reported, which limits our understanding of the genetic and biological mechanisms of C. saxicola. Here, the mt genome of C. saxicola was assembled by combining the Nanopore and Illumina reads. The mt genome of C. saxicola is represented by a circular chromosome which is 587,939 bp in length, with an overall GC content of 46.50%. 40 unique protein-coding genes (PCGs), 22 tRNA genes and three rRNA genes were identified. Codon usage of the PCGs was investigated and 167 simple sequence repeats were identified. Twelve homologous fragments were identified between the mt and ct genomes of C. saxicola, accounting for 1.04% of the entire mt genome. Phylogenetic examination of the mt genomes of C. saxicola and 30 other taxa provided an understanding of their evolutionary relationships. We also predicted 779 RNA editing sites in 40 C. saxicola mt PCGs and successfully validated 506 (65%) of these using PCR amplification and Sanger sequencing. In addition, we transcriptionally profiled 24 core mt PCGs in C. saxicola roots treated with different concentrations of CaCl2, as well as in other organs. These investigations will be useful for effective utilization and molecular breeding, and will also provide a reference for further studies of the genus Corydalis.
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Affiliation(s)
- Cui Li
- National Center for Traditional Chinese Medicine (TCM) Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of Traditional Chinese Medicine (TCM) Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Han Liu
- National Center for Traditional Chinese Medicine (TCM) Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of Traditional Chinese Medicine (TCM) Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Mei Qin
- National Center for Traditional Chinese Medicine (TCM) Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of Traditional Chinese Medicine (TCM) Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Yao-jing Tan
- School of Basic Medical Sciences, Guangxi Medical University, Nanning, China
| | - Xia-lian Ou
- National Center for Traditional Chinese Medicine (TCM) Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of Traditional Chinese Medicine (TCM) Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Xiao-ying Chen
- National Center for Traditional Chinese Medicine (TCM) Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of Traditional Chinese Medicine (TCM) Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Ying Wei
- National Center for Traditional Chinese Medicine (TCM) Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory for High-Quality Formation and Utilization of Dao-di Herbs, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Zhan-jiang Zhang
- National Center for Traditional Chinese Medicine (TCM) Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory for High-Quality Formation and Utilization of Dao-di Herbs, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Ming Lei
- National Center for Traditional Chinese Medicine (TCM) Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- Guangxi Engineering Research Center of Traditional Chinese Medicine (TCM) Resource Intelligent Creation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
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Guo H, Dong Q, Li S, Cha X, Sun L, Duan H, Li S, Jin Y, Zhang M. Effects of exogenous calcium on growth, chlorophyll fluorescence characteristics and antioxidant system of Fraxinus malacophylla seedlings. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107860. [PMID: 37385031 DOI: 10.1016/j.plaphy.2023.107860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 06/14/2023] [Accepted: 06/22/2023] [Indexed: 07/01/2023]
Abstract
Karst ecosystems are becoming increasingly problematic, and high calcium is one of the main characteristics of soils in rocky desertification areas. Chlorophyll fluorescence is one of the most important indicators of the extent to which plants are affected by their environment. There are few reports on the effects of changes in exogenous calcium levels on the chlorophyll fluorescence properties of Fraxinus malacophylla seedlings. In the present study, we investigated the growth, chlorophyll fluorescence properties and antioxidant system of Fraxinus malacophylla seedlings in response to exogenous calcium (as the concentrations of 0, 25, 50, 75 mmol L-1). The results showed that Ca2+ concentration (25-50 mmol L-1) treatment mainly promoted the growth, biomass accumulation, root activity, and chlorophyll synthesis and effect on chlorophyll fluorescence in Fraxinus malacophylla; the developed root system became a strong linking hub for calcium adaptation. In addition, the activities of the antioxidant enzymes peroxidase (POD) and catalase (CAT) are upregulated and play an important role in preventing excessive oxidative damage. OJIP test parameters changed significantly with the addition of exogenous calcium, and parameters related to each photosystem II (PSII) reaction centre, such as ABS/RC and DIo/RC, increased significantly in the OJIP test, with enhanced function of the PSII electron donor lateral oxygen evolution complex. In conclusion, the addition of exogenous calcium (25-50 mmol L-1) had an important protective effect on the photosynthetic mechanism of Fraxinus malacophylla, promoting photosynthesis, better growth and better adaptability.
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Affiliation(s)
- Huanxian Guo
- College of Forestry, Southwest Forestry University, Kunming, Yunnan, 650224, China; Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, Yunnan, 650224, China
| | - Qiong Dong
- College of Forestry, Southwest Forestry University, Kunming, Yunnan, 650224, China; Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, Yunnan, 650224, China.
| | - Shimin Li
- College of Forestry, Southwest Forestry University, Kunming, Yunnan, 650224, China; Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, Yunnan, 650224, China
| | - Xiaofei Cha
- College of Forestry, Southwest Forestry University, Kunming, Yunnan, 650224, China; Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, Yunnan, 650224, China
| | - Lijuan Sun
- College of Forestry, Southwest Forestry University, Kunming, Yunnan, 650224, China; Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, Yunnan, 650224, China
| | - Huachao Duan
- College of Forestry, Southwest Forestry University, Kunming, Yunnan, 650224, China; Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, Yunnan, 650224, China
| | - Shuping Li
- College of Forestry, Southwest Forestry University, Kunming, Yunnan, 650224, China; Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, Yunnan, 650224, China
| | - Youfan Jin
- College of Forestry, Southwest Forestry University, Kunming, Yunnan, 650224, China; Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, Yunnan, 650224, China
| | - Mei Zhang
- College of Forestry, Southwest Forestry University, Kunming, Yunnan, 650224, China; Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China, Southwest Forestry University, Kunming, Yunnan, 650224, China
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Wang Y, Qin T, Pu Z, Dekomah SD, Yao P, Sun C, Liu Y, Bi Z, Bai J. Foliar Application of Chelated Sugar Alcohol Calcium Improves Photosynthesis and Tuber Quality under Drought Stress in Potatoes ( Solanum tuberosum L.). Int J Mol Sci 2023; 24:12216. [PMID: 37569590 PMCID: PMC10418820 DOI: 10.3390/ijms241512216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
Drought stress is a major threat to sustainable crop production worldwide. Despite the positive role of calcium (Ca2+) in improving plant drought tolerance in different crops, little attention has been paid to its role in mitigating drought stress in potatoes. In the present study, we studied the effect of foliar chelated sugar alcohol calcium treatments on two potato cultivars with different drought responses applied 15 and 30 days after limiting soil moisture. The results showed that the foliar application of calcium treatments alleviated the SPAD chlorophyll loss of the drought-sensitive cultivar 'Atlantic' (Atl) and reduced the inhibition of photosynthetic parameters, leaf anatomy deformation, and MDA and H2O2 content of both cultivars under drought stress. The Ca2+ treatments changed the expression of several Calcium-Dependent Protein Kinase (StCDPK) genes involved in calcium sensing and signaling and significantly increased antioxidant enzyme activities, average tuber weight per plant, and tuber quality of both cultivars. We conclude that calcium spray treatments improved the drought tolerance of both potato cultivars and were especially effective for the drought-sensitive cultivar. The present work suggests that the foliar application of calcium is a promising strategy to improve commercial potato yields and the economic efficiency of potato production under drought stress conditions.
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Affiliation(s)
- Yihao Wang
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Tianyuan Qin
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhuanfang Pu
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Simon Dontoro Dekomah
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Panfeng Yao
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Chao Sun
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Yuhui Liu
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Zhenzhen Bi
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Jiangping Bai
- Department of Crop Genetics and Breeding, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China
- State Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China
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Feng D, Wang X, Gao J, Zhang C, Liu H, Liu P, Sun X. Exogenous calcium: Its mechanisms and research advances involved in plant stress tolerance. FRONTIERS IN PLANT SCIENCE 2023; 14:1143963. [PMID: 37025147 PMCID: PMC10070993 DOI: 10.3389/fpls.2023.1143963] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 03/09/2023] [Indexed: 06/19/2023]
Abstract
Abiotic stresses are various environmental factors that inhibit a normal plant growth and limit the crop productivity. Plant scientists have been attempting for a long time to understand how plants respond to these stresses and find an effective and feasible solution in mitigating their adverse impacts. Exogenous calcium ion as an essential element for the plant growth, development and reproduction has proven to be effective in alleviating plant stresses through enhancing its resistance or tolerance against them. With a comprehensive review of most recent advances and the analysis by VOSviewer in the researches on this focus of "exogenous calcium" and "stress" for last decade, this paper summarizes the mechanisms of exogenous calcium that are involved in plant defensive responses to abiotic stresses and classifies them accordingly into six categories: I) stabilization of cell walls and membranes; II) regulation of Na+ and K+ ratios; III) regulation of hormone levels in plants; IV) maintenance of photosynthesis; V) regulation of plant respiratory metabolism and improvement of root activities; and VI) induction of gene expressions and protein transcriptions for the stress resistance. Also, the progress and advances from the updated researches on exogenous calcium to alleviate seven abiotic stresses such as drought, flooding, salinity, high temperature, low temperature, heavy metals, and acid rain are outlined. Finally, the future research perspectives in agricultural production are discussed.
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Affiliation(s)
- Di Feng
- Shandong Facility Horticulture Bioengineering Research Center, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Xuejie Wang
- Shandong Facility Horticulture Bioengineering Research Center, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Junping Gao
- Shandong Facility Horticulture Bioengineering Research Center, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Chenxi Zhang
- Shandong Facility Horticulture Bioengineering Research Center, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Hao Liu
- Key Laboratory of Crop Water Requirement and Regulation of the Ministry of Agriculture and Rural Afairs/Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, Henan, China
| | - Ping Liu
- Shandong Facility Horticulture Bioengineering Research Center, Weifang University of Science and Technology, Shouguang, Shandong, China
| | - Xiaoan Sun
- Shandong Facility Horticulture Bioengineering Research Center, Weifang University of Science and Technology, Shouguang, Shandong, China
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Hu Y, Yang L, Gao C, Liao D, Long L, Qiu J, Wei H, Deng Q, Zhou Y. A comparative study on the leaf anatomical structure of Camellia oleifera in a low-hot valley area in Guizhou Province, China. PLoS One 2022; 17:e0262509. [PMID: 35051236 PMCID: PMC8775352 DOI: 10.1371/journal.pone.0262509] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 12/27/2021] [Indexed: 12/22/2022] Open
Abstract
The leaf serves as an important assimilation organ of plants, and the anatomical structure of leaves can reflect the adaptability of the plant to the environment to a certain extent. The current study aimed to cultivate superior local cultivars, and 35 healthy individual plants were selected from the Camellia oleifera germplasm resource nursery for a comparative study of the leaf structure. In July 2019, the leaves were collected from 35 selected healthy C. oleifera plants, and the leaf structure was observed by using the paraffin section method. Healthy individual plants were screened using variance analysis, correlation analysis and cluster analysis. The representative indices were selected according to the cluster membership, correlation indices and coefficient of variation (C/V) for a comprehensive evaluation of drought resistance via the membership function. There were extremely significant differences in 11 indices of leaf structure for these 35 healthy plants. C18 had the greatest leaf thickness, C7 the largest spongy tissue, and C38 the largest ratio of palisade tissue thickness to spongy tissue thickness (P/S). The clustering results of the healthy individual plants differed significantly. The membership function showed that the drought resistance of 35 C. oleifera plants was divided into five categories. C18 had very strong drought resistance, and C3, C7 and C40 had strong drought resistance. There were significant differences in terms of the upper epidermis, P/S ratio and spongy tissue among the C. oleifera plants. C18, C3, C7 and C40 exhibited satisfactory drought resistance. Although C39 and C26 had moderate drought resistance, their P/S ratios were high, which might be used to cultivate high-yield and drought-resistant C. oleifera varieties. The leaf P/S ratio of C. oleifera from low-hot valley areas was high. Among various leaf structures, spongy tissue, upper epidermis, P/S ratio and cuticle constitute the drought resistance evaluation indices for C. oleifera grown in low-hot valley areas.
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Affiliation(s)
- Yang Hu
- Institute for Forest Resources and Environment of Guizhou, Key laboratory of forest cultivation in plateau mountain of Guizhou province, College of Forestry, Guizhou University, Guiyang, China
| | - Lu Yang
- Institute for Forest Resources and Environment of Guizhou, Key laboratory of forest cultivation in plateau mountain of Guizhou province, College of Forestry, Guizhou University, Guiyang, China
| | - Chao Gao
- Institute for Forest Resources and Environment of Guizhou, Key laboratory of forest cultivation in plateau mountain of Guizhou province, College of Forestry, Guizhou University, Guiyang, China
- * E-mail:
| | - Desheng Liao
- Guizhou Southwest Karst Regional Development Institute, Xingyi, China
| | - Li Long
- Institute for Forest Resources and Environment of Guizhou, Key laboratory of forest cultivation in plateau mountain of Guizhou province, College of Forestry, Guizhou University, Guiyang, China
| | - Jie Qiu
- Institute for Forest Resources and Environment of Guizhou, Key laboratory of forest cultivation in plateau mountain of Guizhou province, College of Forestry, Guizhou University, Guiyang, China
| | - Hongli Wei
- Institute for Forest Resources and Environment of Guizhou, Key laboratory of forest cultivation in plateau mountain of Guizhou province, College of Forestry, Guizhou University, Guiyang, China
| | - Quanen Deng
- Institute for Forest Resources and Environment of Guizhou, Key laboratory of forest cultivation in plateau mountain of Guizhou province, College of Forestry, Guizhou University, Guiyang, China
| | - Yunchao Zhou
- Institute for Forest Resources and Environment of Guizhou, Key laboratory of forest cultivation in plateau mountain of Guizhou province, College of Forestry, Guizhou University, Guiyang, China
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Ahmad HM, Wang X, Mahmood-Ur-Rahman, Fiaz S, Azeem F, Shaheen T. Morphological and Physiological Response of Helianthus annuus L. to Drought Stress and Correlation of Wax Contents for Drought Tolerance Traits. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2021. [DOI: 10.1007/s13369-021-06098-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Ibañez VN, Kozub PC, González CV, Jerez DN, Masuelli RW, Berli FJ, Marfil CF. Response to water deficit of semi-desert wild potato Solanum kurtzianum genotypes collected from different altitudes. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 308:110911. [PMID: 34034868 DOI: 10.1016/j.plantsci.2021.110911] [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: 11/17/2020] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Drought-sensitive crops are threatened as a consequence of limited available water due to climate change. The cultivated potato (Solanum tuberosum) is susceptible to drought and within its wild relative species, Solanum kurtzianum is the Argentinian wild potato species best adapted to arid conditions. However, its physiological responses to water deficit (WD) are still missing. Within the distribution of S. kurtzianum, genotypes could be adapted to differential precipitation regimes. The aim of this work was to evaluate responses of three S. kurtzianum genotypes collected at 1100 (G1), 1900 (G2) and 2100 m a.s.l. (G3) to moderate and severe WD. Treatments were imposed since flowering and lasted 36 days. Yield components, morpho-physiological and biochemical responses; and phenotypic plasticity were evaluated. The three genotypes presented mechanisms to tolerate both WD treatments. G1 presented the lowest yield reduction under moderate WD, mainly through a rapid stomatal closure and a modest vegetative growth. The differences among genotypes suggest that local adaptation is taking place within its natural habitat. Also, G2 presented environmentally induced shifts in plasticity for stomatal length and carotenoids, suggesting that phenotypic plasticity has a role in acclimation of plants to WD until selection works.
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Affiliation(s)
- Verónica Noé Ibañez
- Instituto de Biología Agrícola de Mendoza, CONICET-Universidad Nacional de Cuyo, Facultad de Ciencias Agrarias, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina.
| | - Perla Carolina Kozub
- Instituto de Biología Agrícola de Mendoza, CONICET-Universidad Nacional de Cuyo, Facultad de Ciencias Agrarias, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina; Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina
| | - Carina Verónica González
- Instituto de Biología Agrícola de Mendoza, CONICET-Universidad Nacional de Cuyo, Facultad de Ciencias Agrarias, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre Contreras 1300, Mendoza, Argentina
| | - Damián Nicolás Jerez
- Instituto de Biología Agrícola de Mendoza, CONICET-Universidad Nacional de Cuyo, Facultad de Ciencias Agrarias, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina
| | - Ricardo Williams Masuelli
- Instituto de Biología Agrícola de Mendoza, CONICET-Universidad Nacional de Cuyo, Facultad de Ciencias Agrarias, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina; Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina
| | - Federico Javier Berli
- Instituto de Biología Agrícola de Mendoza, CONICET-Universidad Nacional de Cuyo, Facultad de Ciencias Agrarias, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina; Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina
| | - Carlos Federico Marfil
- Instituto de Biología Agrícola de Mendoza, CONICET-Universidad Nacional de Cuyo, Facultad de Ciencias Agrarias, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina; Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, Alte. Brown 500, M5505, Chacras de Coria, Mendoza, Argentina
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Zhu Y, Luo X, Nawaz G, Yin J, Yang J. Physiological and Biochemical Responses of four cassava cultivars to drought stress. Sci Rep 2020; 10:6968. [PMID: 32332812 PMCID: PMC7181862 DOI: 10.1038/s41598-020-63809-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 03/30/2020] [Indexed: 11/09/2022] Open
Abstract
The antioxidant mechanism is crucial for resisting oxidative damage induced by drought stress in plants. Different antioxidant mechanisms may contribute to the tolerance of cassava to drought stress, but for a specific genotype, the response is still unknown. The objective of this study was to investigate antioxidant response and physiological changes of four cassava genotypes under water stress conditions, by keeping the soil moisture content as 80% (control), 50% (medium), 20% (severe) of field capacity for a week. Genotypes RS01 and SC124 were keeping higher relative water content (RWC) and relative chlorophyll content (SPAD value) and less affected by oxidative stress than SC205 and GR4 under drought stress. RS01 just showed slight membrane damage and oxidative stress even under severe drought conditions. A principal component analysis showed that cassava plant water status was closely related to the antioxidant mechanism. Antioxidant response in genotypes RS01 and SC124 under drought stress might attribute to the increased accumulation of ascorbate (AsA) and glutathione (GSH) content and higher superoxide dismutase (SOD) and catalase (CAT) activities, which explained by the up-regulation of Mn-SOD and CAT genes. However, Genotypes SC205 and GR4 mainly depended on the accumulation of total phenolics (TP) and increased glutathione reductase (GR) activity, which attribute to the up-regulation of the GR gene. Our findings could provide vital knowledge for refining the tactics of cultivation and molecular breeding with drought avoidance in cassava.
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Affiliation(s)
- Yanmei Zhu
- Agricultural College of Guangxi University, Nanning, 530005, China
| | - Xinglu Luo
- Agricultural College of Guangxi University, Nanning, 530005, China.
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Nanning, 530005, China.
| | - Gul Nawaz
- Agricultural College of Guangxi University, Nanning, 530005, China
| | - Jingjing Yin
- Agricultural College of Guangxi University, Nanning, 530005, China
| | - Jingni Yang
- Agricultural College of Guangxi University, Nanning, 530005, China
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