干旱区生态环境知识资源中心(Arid): Photosynthesis and Growth ofPennisetum centrasiaticum(C-4) is Superior to Calamagrostis pseudophragmites (C-3) during Drought and Recovery

Arid

DOI	10.3390/plants9080991
	Photosynthesis and Growth ofPennisetum centrasiaticum(C-4) is Superior to Calamagrostis pseudophragmites (C-3) during Drought and Recovery
	Luo, Yayong; Zhao, Xueyong; Allington, Ginger R. H.; Wang, Lilong; Huang, Wenda; Zhang, Rui; Luo, Yongqing; Xu, Zhuwen
通讯作者	Luo, YY
来源期刊	PLANTS-BASEL
EISSN	2223-7747
出版年	2020
卷号	9 期号:8
英文摘要	Global warming and changes in rainfall patterns may put many ecosystems at risk of drought. These stressors could be particularly destructive in arid systems where species are already water-limited. Understanding plant responses in terms of photosynthesis and growth to drought and rewatering is essential for predicting ecosystem-level responses to climate change. Different drought responses of C(3)and C(4)species could have important ecological implications affecting interspecific competition and distribution of plant communities in the future. For this study, C(4)plantPennisetum centrasiaticumand C(3)plantCalamagrostis pseudophragmiteswere subjected to progressive drought and subsequent rewatering in order to better understand their differential responses to regional climate changes. We tracked responses in gas exchange, chlorophyll fluorescence, biomass as well as soil water status in order to investigate the ecophysiological responses of these two plant functional types. Similar patterns of photosynthetic regulations were observed during drought and rewatering for both psammophytes. They experienced stomatal restriction and nonstomatal restriction successively during drought. Photosynthetic performance recovered to the levels in well-watered plants after rewatering for 6-8 days. The C(4)plant,P. centrasiaticum, exhibited the classic CO2-concentrating mechanism and more efficient thermal dissipation in the leaves, which confers more efficient CO(2)assimilation and water use efficiency, alleviating drought stress, maintaining their photosynthetic advantage until water deficits became severe and quicker recovery after rewatering. In addition,P. centrasiaticumcan allocate a greater proportion of root biomass in case of adequate water supply and a greater proportion of above-ground biomass in case of drought stress. This physiological adaptability and morphological adjustment underline the capacity of C(4)plantP. centrasiaticumto withstand drought more efficiently and recover upon rewatering more quickly thanC. pseudophragmitesand dominate in the Horqin Sandy Land.
英文关键词	psammophytes photosynthesis biomass drought recovery
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000572560900001
WOS关键词	LIMITATIONS ; STRESS ; PLANTS ; PERFORMANCE ; RESPONSES ; SALINITY ; TREES
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326493
作者单位	[Luo, Yayong; Zhao, Xueyong; Wang, Lilong; Huang, Wenda; Zhang, Rui; Luo, Yongqing] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou 730000, Peoples R China; [Luo, Yayong; Huang, Wenda] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lab Stress Ecophysiol & Biotechnol, Lanzhou 730000, Peoples R China; [Allington, Ginger R. H.] George Washington Univ, Dept Geog, Washington, DC 20052 USA; [Xu, Zhuwen] Minist Educ, Key Lab Ecol & Resources Use Mongolian Plateau, Hohhot 010021, Peoples R China
推荐引用方式 GB/T 7714	Luo, Yayong,Zhao, Xueyong,Allington, Ginger R. H.,et al. Photosynthesis and Growth ofPennisetum centrasiaticum(C-4) is Superior to Calamagrostis pseudophragmites (C-3) during Drought and Recovery[J],2020,9(8).
APA	Luo, Yayong.,Zhao, Xueyong.,Allington, Ginger R. H..,Wang, Lilong.,Huang, Wenda.,...&Xu, Zhuwen.(2020).Photosynthesis and Growth ofPennisetum centrasiaticum(C-4) is Superior to Calamagrostis pseudophragmites (C-3) during Drought and Recovery.PLANTS-BASEL,9(8).
MLA	Luo, Yayong,et al."Photosynthesis and Growth ofPennisetum centrasiaticum(C-4) is Superior to Calamagrostis pseudophragmites (C-3) during Drought and Recovery".PLANTS-BASEL 9.8(2020).