干旱区生态环境知识资源中心(Arid): Does root respiration and root anatomical traits affect crop yield under stress? A meta-analysis and experimental study

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DOI	10.1007/s11104-024-06892-4
	Does root respiration and root anatomical traits affect crop yield under stress? A meta-analysis and experimental study
	Du, Pengzhen; Lynch, Jonathan P.; Sun, Zhengli; Li, Feng-Min
通讯作者	Du, PZ
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2024
英文摘要	Background and aimsFunctional traits are fundamental for understanding and predicting crop responses to abiotic stress and yield improvement. Root functional traits are key determinants of carbon allocation and water transport efficiency. However, there are few studies integrating the effects of physiological and anatomical phenotypes in roots on yield.MethodsWe performed a global scale data analysis to quantify the ecological effects of root functional traits on yield under abiotic stress. A field study was also conducted to test the relationships between yield and root anatomical traits such as cortex area and xylem area in two semi-arid regions in China.Key resultsThe search of literature on the relationships between yield and root phenotypes was fairly consistent with the results in the field. Meta-analysis showed specific root respiration was negatively related to yield under stress. Critical thresholds of whole root respiration (RR = 0.823) and xylem area (RR = 0.912) were observed for better yield under stress. Hydraulic conductance was positively correlated with xylem area, stele diameter and vessel number under stress. In the field study, there were inverse relationships between yield and cortex area and xylem area was positively related to wheat yield at both sites.ConclusionsOur study suggests that there are inverse relationships between yield and cortex area and respiration. Increased yield was associated with decreased whole root respiration with potentially smaller cortical tissue when whole respiration under stress was reduced by less than 17.7% compared with the control. However, increased xylem area contributed to high yields at both sites under rain-fed conditions.HighlightsSpecific root respiration was negatively related to yield under stress.Whole root respiration was negatively related to yield under stress beyond an optimal value (RR = 0.823).There were inverse relationships between yield and root cortical area in two regions.A critical threshold of xylem area was observed for yield under stress (RR = 0.912).
英文关键词	Anatomical traits Carbon allocation Cortex area Root hydraulic conductance Root respiration Water transport Winter wheat Xylem area Yield
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001294086300003
WOS关键词	IMPROVES DROUGHT TOLERANCE ; CORTICAL AERENCHYMA ; WATER-USE ; GRAIN-YIELD ; RICE ; WHEAT ; EFFICIENCY ; PHOTOSYNTHESIS ; OPPORTUNITIES ; PLASTICITY
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405092
推荐引用方式 GB/T 7714	Du, Pengzhen,Lynch, Jonathan P.,Sun, Zhengli,et al. Does root respiration and root anatomical traits affect crop yield under stress? A meta-analysis and experimental study[J],2024.
APA	Du, Pengzhen,Lynch, Jonathan P.,Sun, Zhengli,&Li, Feng-Min.(2024).Does root respiration and root anatomical traits affect crop yield under stress? A meta-analysis and experimental study.PLANT AND SOIL.
MLA	Du, Pengzhen,et al."Does root respiration and root anatomical traits affect crop yield under stress? A meta-analysis and experimental study".PLANT AND SOIL (2024).