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Comparative Physiological and Transcriptional Analyses of Two Contrasting Drought Tolerant Alfalfa Varieties
Quan, Wenli1,2; Liu, Xun1,2; Wang, Haiqing3; Chan, Zhulong1
2016-01-12
发表期刊FRONTIERS IN PLANT SCIENCE
卷号6
文章类型Article
摘要Drought is one of major environmental determinants of plant growth and productivity. Alfalfa (Meclicago sativa) is a legume perennial forage crop native to the arid and semi arid environment, which is an ideal candidate to study the biochemical and molecular mechanisms conferring drought resistance in plants. In this study, drought stress responses of two alfalfa varieties, Longdong and Algonquin, were comparatively assayed at the physiological, morphological, and transcriptional levels. Under control condition, the drought tolerant Longdong with smaller leaf size and lower stomata density showed less water loss than the drought-sensitive Algonquin. After exposing to drought stress, Longdong showed less severe cell membrane damage, more proline, and ascorbate (ASC) contents and less accumulation of H2O2 than Algonquin. Moreover, significantly higher antioxidant enzymes activities after drought treatment were found in Longdong when compared with Algonquin. In addition, transcriptional expression analysis showed that Longdong exhibited significantly higher transcripts of drought-responsive genes in leaf and root under drought stress condition. Taken together, these results indicated that Longdong variety was more drought-tolerant than Algonquin variety as evidenced by less leaf firing, more lateral root number, higher relative aboveground/underground biomass per plant and survival rate.
关键词Alfalfa Drought Stress Stomata Density Lateral Root Physiological Changes Transcriptional Expression
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.3389/fpls.2015.01256
关键词[WOS]CONFERS ENHANCED TOLERANCE ; MEDICAGO-SATIVA L. ; OXIDATIVE STRESS ; SIGNAL-TRANSDUCTION ; ABIOTIC STRESSES ; SALT STRESS ; WATER-DEFICIT ; PLANTS ; GENE ; ARABIDOPSIS
收录类别SCI
语种英语
项目资助者hundred Talents Program ; Knowledge Innovative Key Program of Chinese Academy of Sciences(Y154761O01076 ; Y329631O0263)
WOS研究方向Plant Sciences
WOS类目Plant Sciences
WOS记录号WOS:000368002300003
引用统计
被引频次:54[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/6505
专题中国科学院西北高原生物研究所
作者单位1.Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan Bot Garden Sino Africa Joint Res Ctr, Wuhan, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining, Peoples R China
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Quan, Wenli,Liu, Xun,Wang, Haiqing,et al. Comparative Physiological and Transcriptional Analyses of Two Contrasting Drought Tolerant Alfalfa Varieties[J]. FRONTIERS IN PLANT SCIENCE,2016,6.
APA Quan, Wenli,Liu, Xun,Wang, Haiqing,&Chan, Zhulong.(2016).Comparative Physiological and Transcriptional Analyses of Two Contrasting Drought Tolerant Alfalfa Varieties.FRONTIERS IN PLANT SCIENCE,6.
MLA Quan, Wenli,et al."Comparative Physiological and Transcriptional Analyses of Two Contrasting Drought Tolerant Alfalfa Varieties".FRONTIERS IN PLANT SCIENCE 6(2016).
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