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DOI	10.1002/ajb2.16349
	Genetically correlated leaf tensile and morphological traits are driven by growing season length in a widespread perennial grass
	Durant, P. Camilla; Bhasin, Amit; Juenger, Thomas E.; Heckman, Robert W.
发表日期	2024
ISSN	0002-9122
EISSN	1537-2197
起始页码	111
结束页码	5
卷号	111 期号:5
英文摘要	PremiseLeaf tensile resistance, a leaf's ability to withstand pulling forces, is an important determinant of plant ecological strategies. One potential driver of leaf tensile resistance is growing season length. When growing seasons are long, strong leaves, which often require more time and resources to construct than weak leaves, may be more advantageous than when growing seasons are short. Growing season length and other ecological conditions may also impact the morphological traits that underlie leaf tensile resistance.MethodsTo understand variation in leaf tensile resistance, we measured size-dependent leaf strength and size-independent leaf toughness in diverse genotypes of the widespread perennial grass Panicum virgatum (switchgrass) in a common garden. We then used quantitative genetic approaches to estimate the heritability of leaf tensile resistance and whether there were genetic correlations between leaf tensile resistance and other morphological traits.ResultsLeaf tensile resistance was positively associated with aboveground biomass (a proxy for fitness). Moreover, both measures of leaf tensile resistance exhibited high heritability and were positively genetically correlated with leaf lamina thickness and leaf mass per area (LMA). Leaf tensile resistance also increased with the growing season length in the habitat of origin, and this effect was mediated by both LMA and leaf thickness.ConclusionsDifferences in growing season length may promote selection for different leaf lifespans and may explain existing variation in leaf tensile resistance in P. virgatum. In addition, the high heritability of leaf tensile resistance suggests that P. virgatum will be able to respond to climate change as growing seasons lengthen.
英文关键词	bioenergy crops; Cauchy combination; common garden; functional traits; genome-wide association; grass evolution; leaf economics spectrum; leaf longevity; Poaceae; structural equation modeling
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001229895800001
来源期刊	AMERICAN JOURNAL OF BOTANY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300802
作者单位	University of Texas System; University of Texas Austin; University of Texas System; University of Texas Austin; University of Texas System; University of Texas Austin; Michigan State University; United States Department of Agriculture (USDA); United States Forest Service
推荐引用方式 GB/T 7714	Durant, P. Camilla,Bhasin, Amit,Juenger, Thomas E.,et al. Genetically correlated leaf tensile and morphological traits are driven by growing season length in a widespread perennial grass[J],2024,111(5).
APA	Durant, P. Camilla,Bhasin, Amit,Juenger, Thomas E.,&Heckman, Robert W..(2024).Genetically correlated leaf tensile and morphological traits are driven by growing season length in a widespread perennial grass.AMERICAN JOURNAL OF BOTANY,111(5).
MLA	Durant, P. Camilla,et al."Genetically correlated leaf tensile and morphological traits are driven by growing season length in a widespread perennial grass".AMERICAN JOURNAL OF BOTANY 111.5(2024).