Genotypic variation in growth and physiological response to drought stress and re-watering reveals the critical role of recovery in drought adaptation in maize seedlings
Non-irrigated crops in temperate climates and irrigated crops in arid climates are subjected to continuous cycles of water stress and re-watering. Thus, fast and efficient recovery from water stress may be among the key determinants of plant drought adaptation. The present study was designed to comp...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2016-01-01
|
| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpls.2015.01241/full |
| _version_ | 1819090722054209536 |
|---|---|
| author | Daoqian eChen Daoqian eChen Shiwen eWang Shiwen eWang Shiwen eWang Beibei eCao Dan eCao Guohui eLeng Hongbing eLi Hongbing eLi Lina eYin Lina eYin Lun eShan Lun eShan Xiping eDeng Xiping eDeng Xiping eDeng |
| author_facet | Daoqian eChen Daoqian eChen Shiwen eWang Shiwen eWang Shiwen eWang Beibei eCao Dan eCao Guohui eLeng Hongbing eLi Hongbing eLi Lina eYin Lina eYin Lun eShan Lun eShan Xiping eDeng Xiping eDeng Xiping eDeng |
| author_sort | Daoqian eChen |
| collection | DOAJ |
| description | Non-irrigated crops in temperate climates and irrigated crops in arid climates are subjected to continuous cycles of water stress and re-watering. Thus, fast and efficient recovery from water stress may be among the key determinants of plant drought adaptation. The present study was designed to comparatively analyze the roles of drought resistance and drought recovery in drought adaptation and to investigate the physiological basis of genotypic variation in drought adaptation in maize (Zea mays) seedlings. As the seedlings behavior in growth associate with yield under drought, it could partly reflect the potential of drought adaptability. Growth and physiological responses to progressive drought stress and recovery were observed in seedlings of ten maize lines. The results showed that drought adaptability is closely related to drought recovery (r = 0.714**), but not to drought resistance (r = 0.332). Drought induced decreases in leaf water content, water potential, osmotic potential, gas exchange parameters, chlorophyll content, Fv/Fm and nitrogen content, and increased H2O2 accumulation and lipid peroxidation. After recovery, most of these physiological parameters rapidly returned to normal levels. The physiological responses varied between lines. Further correlation analysis indicated that the physiological bases of drought resistance and drought recovery are definitely different, and that maintaining higher chlorophyll content (r = 0.874***) and Fv/Fm (r = 0.626*) under drought stress contributes to drought recovery. Our results suggest that both drought resistance and recovery are key determinants of plant drought adaptation, and that drought recovery may play a more important role than previously thought. In addition, leaf water potential, chlorophyll content and Fv/Fm could be used as efficient reference indicators in the selection of drought-adaptive genotypes. |
| first_indexed | 2024-12-21T22:28:20Z |
| format | Article |
| id | doaj.art-839fe98e3f79481ca956bcb4c66eae50 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-21T22:28:20Z |
| publishDate | 2016-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-839fe98e3f79481ca956bcb4c66eae502022-12-21T18:48:10ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2016-01-01610.3389/fpls.2015.01241172337Genotypic variation in growth and physiological response to drought stress and re-watering reveals the critical role of recovery in drought adaptation in maize seedlingsDaoqian eChen0Daoqian eChen1Shiwen eWang2Shiwen eWang3Shiwen eWang4Beibei eCao5Dan eCao6Guohui eLeng7Hongbing eLi8Hongbing eLi9Lina eYin10Lina eYin11Lun eShan12Lun eShan13Xiping eDeng14Xiping eDeng15Xiping eDeng16Northwest A&F UniversityNorthwest A&F UniversityNorthwest A&F UniversityNorthwest A&F UniversityChinese Academy of Sciences and Ministry of Water ResourcesNorthwest A&F UniversityChinese Academy of Sciences and Ministry of Water ResourcesBeijing Zhongnong Chuangyou Seed Technology Corporation LimitedNorthwest A&F UniversityChinese Academy of Sciences and Ministry of Water ResourcesNorthwest A&F UniversityChinese Academy of Sciences and Ministry of Water ResourcesNorthwest A&F UniversityChinese Academy of Sciences and Ministry of Water ResourcesNorthwest A&F UniversityNorthwest A&F UniversityChinese Academy of Sciences and Ministry of Water ResourcesNon-irrigated crops in temperate climates and irrigated crops in arid climates are subjected to continuous cycles of water stress and re-watering. Thus, fast and efficient recovery from water stress may be among the key determinants of plant drought adaptation. The present study was designed to comparatively analyze the roles of drought resistance and drought recovery in drought adaptation and to investigate the physiological basis of genotypic variation in drought adaptation in maize (Zea mays) seedlings. As the seedlings behavior in growth associate with yield under drought, it could partly reflect the potential of drought adaptability. Growth and physiological responses to progressive drought stress and recovery were observed in seedlings of ten maize lines. The results showed that drought adaptability is closely related to drought recovery (r = 0.714**), but not to drought resistance (r = 0.332). Drought induced decreases in leaf water content, water potential, osmotic potential, gas exchange parameters, chlorophyll content, Fv/Fm and nitrogen content, and increased H2O2 accumulation and lipid peroxidation. After recovery, most of these physiological parameters rapidly returned to normal levels. The physiological responses varied between lines. Further correlation analysis indicated that the physiological bases of drought resistance and drought recovery are definitely different, and that maintaining higher chlorophyll content (r = 0.874***) and Fv/Fm (r = 0.626*) under drought stress contributes to drought recovery. Our results suggest that both drought resistance and recovery are key determinants of plant drought adaptation, and that drought recovery may play a more important role than previously thought. In addition, leaf water potential, chlorophyll content and Fv/Fm could be used as efficient reference indicators in the selection of drought-adaptive genotypes.http://journal.frontiersin.org/Journal/10.3389/fpls.2015.01241/fulldrought resistanceMaizedrought adaptationgenotypic variationDrought recovery |
| spellingShingle | Daoqian eChen Daoqian eChen Shiwen eWang Shiwen eWang Shiwen eWang Beibei eCao Dan eCao Guohui eLeng Hongbing eLi Hongbing eLi Lina eYin Lina eYin Lun eShan Lun eShan Xiping eDeng Xiping eDeng Xiping eDeng Genotypic variation in growth and physiological response to drought stress and re-watering reveals the critical role of recovery in drought adaptation in maize seedlings Frontiers in Plant Science drought resistance Maize drought adaptation genotypic variation Drought recovery |
| title | Genotypic variation in growth and physiological response to drought stress and re-watering reveals the critical role of recovery in drought adaptation in maize seedlings |
| title_full | Genotypic variation in growth and physiological response to drought stress and re-watering reveals the critical role of recovery in drought adaptation in maize seedlings |
| title_fullStr | Genotypic variation in growth and physiological response to drought stress and re-watering reveals the critical role of recovery in drought adaptation in maize seedlings |
| title_full_unstemmed | Genotypic variation in growth and physiological response to drought stress and re-watering reveals the critical role of recovery in drought adaptation in maize seedlings |
| title_short | Genotypic variation in growth and physiological response to drought stress and re-watering reveals the critical role of recovery in drought adaptation in maize seedlings |
| title_sort | genotypic variation in growth and physiological response to drought stress and re watering reveals the critical role of recovery in drought adaptation in maize seedlings |
| topic | drought resistance Maize drought adaptation genotypic variation Drought recovery |
| url | http://journal.frontiersin.org/Journal/10.3389/fpls.2015.01241/full |
| work_keys_str_mv | AT daoqianechen genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT daoqianechen genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT shiwenewang genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT shiwenewang genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT shiwenewang genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT beibeiecao genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT danecao genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT guohuieleng genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT hongbingeli genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT hongbingeli genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT linaeyin genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT linaeyin genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT luneshan genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT luneshan genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT xipingedeng genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT xipingedeng genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings AT xipingedeng genotypicvariationingrowthandphysiologicalresponsetodroughtstressandrewateringrevealsthecriticalroleofrecoveryindroughtadaptationinmaizeseedlings |