重新设计大豆,改良油脂和粕的特性

IF 4.4 1区 农林科学 Q1 AGRONOMY Theoretical and Applied Genetics Pub Date : 2024-09-10 DOI:10.1007/s00122-024-04732-8
Jeonghwa Kim, Andrew Scaboo, Katy Martin Rainey, Felix B. Fritschi, Kristin Bilyeu
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引用次数: 0

摘要

摘要大豆[Glycine max (L.) Merr.]是世界上一种重要的农作物;其总体价值来自籽油和高蛋白粕。开发具有等位基因组合的大豆品种以提高油和粕的质量,有望为大豆提供一个成分价值束。高油酸和低亚麻酸籽油性状(HOLL; > 70% 油酸和 < 3% 亚麻酸)的目标是优化大豆油的健康和功能特性。就豆粕而言,通过改变碳水化合物结构,增加蔗糖,减少抗营养因子--棉子糖系列低聚糖(RFO),可提高代谢能。先前的研究发现,脂肪酸去饱和酶(FAD)基因的四个变异等位基因和棉子糖合成酶(RS)基因的两个变异等位基因分别是大豆油中 HOLL 性状和豆粕中低或超低(UL)RFO 性状所必需的。我们采用了分子标记辅助育种方法,将赋予所需大豆油和粕价值性状的六个等位基因组合在一起。我们用 24 个大豆品系进行了 8 个环境田间试验,以评估 FAD 和 RS 基因变异等位基因之间的表型相互作用。结果表明,无论 RS 基因的等位基因状况如何,四个 FAD 基因等位基因都会对籽油的 HOLL 脂肪酸谱产生影响。与 FAD 基因的等位基因组合无关,具有两个 RS 基因变异等位基因的大豆种子具有理想的 RFO 性状。这些结果证实了利用这种独特的油和粕性状组合开发大豆品种的可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Redesigning soybean with improved oil and meal traits

Key Message

Soybean seed oil and meal composition traits can be combined without interference to provide additional value to the crop.

Abstract

Soybean [Glycine max (L.) Merr.] is an important crop worldwide; its overall value comes from seed oil and high protein meal. The development of soybean varieties with allele combinations for improved oil and meal quality is expected to provide a compositional value bundle for soybean. The high oleic and low linolenic acid seed oil trait (HOLL; > 70% oleic and < 3% linolenic acid) is targeted to optimize the health and functional properties of soybean oil. For soybean meal, metabolizable energy is improved by altering the carbohydrate profile with increased sucrose and decreased anti-nutritional factors, raffinose family of oligosaccharides (RFOs). Previous research identified four variant alleles of fatty acid desaturase (FAD) genes and two raffinose synthase (RS) genes necessary for the HOLL trait in soybean oil and Low or Ultra-Low (UL) RFO traits in soybean meal, respectively. We employed a molecular marker-assisted breeding approach to combine six alleles conferring the desired soybean oil and meal value traits. Eight environment field trials were conducted with twenty-four soybean lines to evaluate phenotypic interactions among the variant alleles of FAD and RS genes. The results indicated that the four FAD gene alleles conditioned the HOLL fatty acid profile of the seed oil regardless of the allele status of the RS genes. Independent of the allele combination of the FAD genes, soybean with two variant alleles of the RS genes had the desired RFO trait in the seeds. The results confirm the feasibility of soybean variety development with this unique combination of oil and meal traits.

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来源期刊
CiteScore
9.60
自引率
7.40%
发文量
241
审稿时长
2.3 months
期刊介绍: Theoretical and Applied Genetics publishes original research and review articles in all key areas of modern plant genetics, plant genomics and plant biotechnology. All work needs to have a clear genetic component and significant impact on plant breeding. Theoretical considerations are only accepted in combination with new experimental data and/or if they indicate a relevant application in plant genetics or breeding. Emphasizing the practical, the journal focuses on research into leading crop plants and articles presenting innovative approaches.
期刊最新文献
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