气候变化领域集成服务门户(CCPortal): The genomic basis of nitrogen utilization efficiency and trait plasticity to improve nutrient stress tolerance in cultivated sunflower

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DOI	10.1093/jxb/erae025
	The genomic basis of nitrogen utilization efficiency and trait plasticity to improve nutrient stress tolerance in cultivated sunflower
	Temme, Andries A.; Kerr, Kelly L.; Nolting, Kristen M.; Dittmar, Emily L.; Masalia, Rishi R.; Bucksch, Alexander K.; Burke, John M.; Donovan, Lisa A.
发表日期	2024
ISSN	0022-0957
EISSN	1460-2431
起始页码	75
结束页码	8
卷号	75 期号:8
英文摘要	Maintaining crop productivity is challenging as population growth, climate change, and increasing fertilizer costs necessitate expanding crop production to poorer lands whilst reducing inputs. Enhancing crops' nutrient use efficiency is thus an important goal, but requires a better understanding of related traits and their genetic basis. We investigated variation in low nutrient stress tolerance in a diverse panel of cultivated sunflower genotypes grown under high and low nutrient conditions, assessing relative growth rate (RGR) as performance. We assessed variation in traits related to nitrogen utilization efficiency (NUtE), mass allocation, and leaf elemental content. Across genotypes, nutrient limitation generally reduced RGR. Moreover, there was a negative correlation between vigor (RGR in control) and decline in RGR in response to stress. Given this trade-off, we focused on nutrient stress tolerance independent of vigor. This tolerance metric correlated with the change in NUtE, plasticity for a suite of morphological traits, and leaf element content. Genome-wide associations revealed regions associated with variation and plasticity in multiple traits, including two regions with seemingly additive effects on NUtE change. Our results demonstrate potential avenues for improving sunflower nutrient stress tolerance independent of vigor, and highlight specific traits and genomic regions that could play a role in enhancing tolerance. Genetic associations and trait correlations show that, in cultivated sunflower, selection for increased nitrogen utilization efficiency and plasticity in key traits is a promising avenue for increasing nutrient stress tolerance.
英文关键词	Abiotic stress; GWAS; nutrient stress; plasticity; sunflower; tolerance
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001160704200001
来源期刊	JOURNAL OF EXPERIMENTAL BOTANY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298027
作者单位	University System of Georgia; University of Georgia; Wageningen University & Research; Utah System of Higher Education; University of Utah; University of Arizona
推荐引用方式 GB/T 7714	Temme, Andries A.,Kerr, Kelly L.,Nolting, Kristen M.,et al. The genomic basis of nitrogen utilization efficiency and trait plasticity to improve nutrient stress tolerance in cultivated sunflower[J],2024,75(8).
APA	Temme, Andries A..,Kerr, Kelly L..,Nolting, Kristen M..,Dittmar, Emily L..,Masalia, Rishi R..,...&Donovan, Lisa A..(2024).The genomic basis of nitrogen utilization efficiency and trait plasticity to improve nutrient stress tolerance in cultivated sunflower.JOURNAL OF EXPERIMENTAL BOTANY,75(8).
MLA	Temme, Andries A.,et al."The genomic basis of nitrogen utilization efficiency and trait plasticity to improve nutrient stress tolerance in cultivated sunflower".JOURNAL OF EXPERIMENTAL BOTANY 75.8(2024).