Correlation of continuous ryegrass regrowth with cytokinin induced by root nitrate absorption

doi:10.1007/s10265-013-0574-2

	Correlation of continuous ryegrass regrowth with cytokinin induced by root nitrate absorption
	Wang, Xiao-Ling ; Wang, Jia 1; Li, Zhen-Qing
	2013
发表期刊	JOURNAL OF PLANT RESEARCH
ISSN	0918-9440
卷号	126 期号:5 页码:685-697
摘要	This study investigated the separate and combined effects of nitrate (NO3 (-)) and cytokinin additions on continuous ryegrass regrowth after defoliation and the underlying mechanisms. Our results showed that frequent defoliation reduced the biomass of newly grown leaves and roots, the root soluble carbohydrate contents, the root vitality (an indicator of root absorption capacity), and the leaf contents of NO3 (-), zeatin and zeatin riboside (Z + ZR), and isopentenyl adenine and isopentenyl adenosine (IP + IPA). NO3 (-)addition to the roots or leaves increased the biomass of newly grown leaves as well as the leaf contents of NO3 (-), Z + ZR, and IP + IPA without increasing the root-to-shoot delivery of endogenous cytokinin. Interestingly, cytokinin directly added to the leaves also increased the biomass of newly grown leaves and their Z + ZR and IP + IPA contents, suggesting that nitrate-induced leaf cytokinin production mediates the growth-promoting effects of nitrate. We also found that cytokinin had a direct whereas NO3 (-) had an indirect effect on the biomass of newly grown leaves. Taken together, our results indicate that leaf cytokinin production induced by NO3 (-) absorbed through the roots plays a key role in continuous ryegrass regrowth after defoliation.
关键词	Continuous regrowth Cytokinin Frequent defoliation Nitrate ion Ryegrass
学科领域	Plant Sciences
DOI	10.1007/s10265-013-0574-2
收录类别	SCI
语种	英语
WOS关键词	WATER-STRESS ; SIGNAL-TRANSDUCTION ; ELEVATED CO2 ; NITROGEN ; GROWTH ; RICE ; BIOSYNTHESIS ; WHEAT ; EXPRESSION ; RESPONSES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000323502000012
出版者	SPRINGER JAPAN KK
文献子类	Article
出版地	TOKYO
EISSN	1618-0860
资助机构	973 program(National Basic Research Program of China) ; Postdoctoral Science Foundation of China(China Postdoctoral Science Foundation) ; innovation capability cultivation foundation in natural science of Henan University of Science and technology ; special Postdoctoral Science Foundation of China
作者邮箱	Li, Zhenqing/AAF-2738-2020
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27941
专题	植被与环境变化国家重点实验室
作者单位	1.[Wang, Xiao-Ling 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Henan Univ Sci & Technol, Coll Agron, Luoyang 471003, Henan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiao-Ling,Wang, Jia,Li, Zhen-Qing. Correlation of continuous ryegrass regrowth with cytokinin induced by root nitrate absorption[J]. JOURNAL OF PLANT RESEARCH,2013,126(5):685-697.
APA	Wang, Xiao-Ling,Wang, Jia,&Li, Zhen-Qing.(2013).Correlation of continuous ryegrass regrowth with cytokinin induced by root nitrate absorption.JOURNAL OF PLANT RESEARCH,126(5),685-697.
MLA	Wang, Xiao-Ling,et al."Correlation of continuous ryegrass regrowth with cytokinin induced by root nitrate absorption".JOURNAL OF PLANT RESEARCH 126.5(2013):685-697.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Wang-2013-Correlatio（502KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文