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Combined impact of heat stress and phosphate deficiency on growth and photochemical activity of sheepgrass (Leymus chinensis)

文献类型：期刊论文

作者Li, Lingyu1; Yang, Haomeng; Liu, Peng1; Ren, Weibo2; Wu, Xinhong2; Huang, Fang
刊名JOURNAL OF PLANT PHYSIOLOGY
出版日期2018
卷号231页码:271-276
关键词L. chinensis Climate change Heat stress Pi deficiency PSI PSII
ISSN号0176-1617
DOI10.1016/j.jplph.2018.10.008
文献子类Article
英文摘要Global climate warming has a crucial impact on many terrestrial ecosystems, including temperate steppe. In addition, phosphate deficiency is known to be the common deficiency in soils worldwide due to the low availability of the phosphate nutrient in the form of inorganic phosphate anions (Pi). Consequently, in the future, land plants are likely to simultaneously encounter heat stress and phosphate deficiency more frequently. Sheepgrass (Leymus chinensis (Trin.) Tzvel) is a dominant perennial forage plant highly significant to grass productivity of Eurasian temperate grasslands. Though effects of environmental stress including drought and Pi starvation have been studied, the combined eff ;ects of phosphate deficiency and heat stress on plant physiology remain largely unclear. Here, we investigated the combined eff ;ects of heat stress and phosphate deficiency on above-ground tissue growth and photochemical properties of L. chinensis using in vivo chlorophyll fluorescence spectroscopy. We observed remarkable phenotypic alterations of reduced shoot growth and considerable leaf chlorosis in L. chinensis seedlings under the combined stress condition. Also, we compared changes in photochemical activity between the control and the corresponding stressed seedlings. Based on chlorophyll fluorescence analysis, impairment of PSI was more severe than that of PSII in the seedlings treated with the combined stress. Compared to the control, PSI and PSII activity decreased up to 35.5% and 30%, respectively, under the combined-stress condition. Moreover, our data show that the decreased photosynthetic activity is not the sum of the single-stressed conditions. These results combined with the distinction of other photochemical parameters indicate that a complex interaction between Pi-deficiency and heat stress may exist in the forage plant.
学科主题Plant Sciences
出版地MUNICH
电子版国际标准刊号1618-1328
WOS关键词PHOTOSYSTEM-I ; LEAF ; TEMPERATURE ; PLANTS ; LIGHT ; PHOTOSYNTHESIS ; CHLAMYDOMONAS ; FLUORESCENCE ; STARVATION ; RESPONSES
语种英语
WOS记录号WOS:000451619200027
出版者ELSEVIER GMBH
资助机构National Key Basic Research Development Program of ChinaNational Basic Research Program of China [2014CB138800] ; Strategic Priority Research Program of Chinese Academy of SciencesChinese Academy of Sciences [XDB17000000]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/20589]  
专题中科院光生物学重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, Key Lab Photobiol, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Agr Sci, Inst Grassland Res, Hohhot 010010, Peoples R China
推荐引用方式
GB/T 7714		 Li, Lingyu,Yang, Haomeng,Liu, Peng,et al. Combined impact of heat stress and phosphate deficiency on growth and photochemical activity of sheepgrass (Leymus chinensis)[J]. JOURNAL OF PLANT PHYSIOLOGY,2018,231:271-276.
APA Li, Lingyu,Yang, Haomeng,Liu, Peng,Ren, Weibo,Wu, Xinhong,&Huang, Fang.(2018).Combined impact of heat stress and phosphate deficiency on growth and photochemical activity of sheepgrass (Leymus chinensis).JOURNAL OF PLANT PHYSIOLOGY,231,271-276.
MLA Li, Lingyu,et al."Combined impact of heat stress and phosphate deficiency on growth and photochemical activity of sheepgrass (Leymus chinensis)".JOURNAL OF PLANT PHYSIOLOGY 231(2018):271-276.

入库方式： OAI收割

来源：植物研究所

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