干旱区生态环境知识资源中心(Arid): Relationships of growth, stable carbon isotope composition and anatomical properties of leaf and xylem in seven mulberry cultivars: a hint towards drought tolerance

Arid

DOI	10.1111/plb.13067
	Relationships of growth, stable carbon isotope composition and anatomical properties of leaf and xylem in seven mulberry cultivars: a hint towards drought tolerance
	Cao, X.1,2; Shen, Q.1,2; Liu, L.1,2; Cheng, J.1,2
通讯作者	Cheng, J.
来源期刊	PLANT BIOLOGY
ISSN	1435-8603
EISSN	1438-8677
出版年	2020
卷号	22 期号:2 页码:287-297
英文摘要	The fast growth of mulberry depends on high water consumption, but considerable variations in drought tolerance exist across different cultivars. Physiological and anatomical mechanisms are important to plant survival under drought. However, few research efforts have been made to reveal the relationships of these two aspects in relation to drought tolerance. In this study, growth rates, leaf functional physiology and anatomical characteristics of leaf and xylem of 1-year-old saplings of seven mulberry cultivars at a common garden were compared. Their relationships were also explored. Growth, leaf physiology and anatomy were significantly different among the tested cultivars. Foliar stable carbon isotope composition (delta C-13) was negatively correlated with growth rates, and closely related to several leaf and xylem anatomical traits. Particularly, leaf thickness, predicted hydraulic conductivity and vessel element length jointly contributed 77% of the variability in delta C-13. Cultivar Wupu had small stomata, intermediate leaf thickness, the smallest hydraulically weighted vessel diameter and highest vessel number, and higher delta C-13; Yunguo1 had high abaxial stomatal density, low specific leaf area, moderate hydraulic conductivity and delta C-13; these are beneficial features to reduce leaf water loss and drought-induced xylem embolism in arid areas. Cultivar Liaolu11 had contrasting physiological and anatomical traits compared with the previous two cultivars, suggesting that it might be sensitive to drought. Our findings indicate that growth and delta C-13 are closely associated with both leaf and xylem anatomical characteristics in mulberry, which provides fundamental information to assist evaluation of drought tolerance in mulberry cultivars and in other woody trees.
英文关键词	delta C-13 delta N-15 leaf and xylem anatomy model average method Morus
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000500922400001
WOS关键词	WATER-USE EFFICIENCY ; WOODY-PLANTS ; STOMATAL CONDUCTANCE ; RAINFALL GRADIENT ; HYDRAULIC TRAITS ; TROPICAL FORESTS ; GAS-EXCHANGE ; MORUS SPP. ; STRESS ; DISCRIMINATION
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
EI主题词	2019-12-06
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311619
作者单位	1.Jiangsu Univ Sci & Technol, Zhenjiang 212003, Jiangsu, Peoples R China; 2.Chinese Acad Agr Sci, Key Lab Silkworm & Mulberry Genet Improvement, Minist Agr & Rural Areas, Sericultural Res Inst, Zhenjiang, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Cao, X.,Shen, Q.,Liu, L.,et al. Relationships of growth, stable carbon isotope composition and anatomical properties of leaf and xylem in seven mulberry cultivars: a hint towards drought tolerance[J],2020,22(2):287-297.
APA	Cao, X.,Shen, Q.,Liu, L.,&Cheng, J..(2020).Relationships of growth, stable carbon isotope composition and anatomical properties of leaf and xylem in seven mulberry cultivars: a hint towards drought tolerance.PLANT BIOLOGY,22(2),287-297.
MLA	Cao, X.,et al."Relationships of growth, stable carbon isotope composition and anatomical properties of leaf and xylem in seven mulberry cultivars: a hint towards drought tolerance".PLANT BIOLOGY 22.2(2020):287-297.