Drought deteriorated the nutritional quality of cottonseed by altering fatty acids and amino acids compositions in cultivars with contrasting drought sensitivity
Drought deteriorated the nutritional quality of cottonseed by altering fatty acids and amino acids compositions in cultivars with contrasting drought sensitivity
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干旱通过改变具有对比干旱敏感性的品种中的脂肪酸和氨基酸组成来恶化棉籽的营养品质
DOI：
10.1016/j.envexpbot.2021.104747
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发表时间：
2022
影响因子：
5.7
通讯作者：
Zhiguo Zhou
中科院分区：
文献类型：
--
作者：
Yuxia Li;Jie Zou;Honghai Zhu;Jiaqi He;Tim L. Setter;Youhua Wang;Yali Meng;Binglin Chen;Wenqing Zhao;Shanshan Wang;Wei Hu;Zhiguo Zhou
棉籽因其天然的高油和蛋白质含量而成为食品工业植物油和植物蛋白的极好来源。本研究旨在探讨干旱胁迫对棉籽粒产量和品质的影响。干旱条件下，单株棉籽产量和籽粒产量以及油料产量和蛋白质产量均显着下降。由于干旱，油浓度（%/干重）下降，但蛋白质浓度（%/干重）显着增加。严重干旱下总不饱和脂肪酸（UFA）和总必需氨基酸（EAA）浓度显着下降。此外，多不饱和脂肪酸与饱和脂肪酸比率（PUFA/SFA）、健康促进指数（HPI）、不饱和指数（UI）的下降以及致动脉粥样硬化指数（AI）的增加，表明脂肪酸的不饱和度较低，从而在干旱胁迫下诱导出不健康的油。另外，必需氨基酸指数（EAAI）、营养价值（NI）、氨基酸得分比系数（SRC）和生物价值（BV）的变化预示着干旱胁迫下氨基酸质量下降。结果表明，干旱胁迫降低了棉籽产量并降低了棉籽营养价值。本研究是描述干旱对棉籽营养质量指数影响的领先报告。此外，这项研究有助于了解棉籽营养价值对土壤水分胁迫的响应。
Cottonseed is an excellent source of vegetable oil and plant protein for food industry due to its natural ability of high oil and protein content. This study is designed to examine the influence of drought stress on the yield and quality of cottonseed kernels. Cottonseed yield and kernel yield per plant, as well as oil yield and protein yield, were significantly decreased under drought. The oil concentration (%/dry weight) decreased, but protein concentration (%/dry weight) increased significantly in response to drought. Total unsaturated fatty acids (UFA) and total essential amino acids (EAA) concentrations decreased notably under severe drought. Moreover, the decrease of polyunsaturated to saturated fatty acids ratio (PUFA/SFA), health-promoting index (HPI), unsaturation index (UI), and the increased atherogenicity index (AI), indicated the lower unsaturation of fatty acids which induced an unhealthy oil under drought stress. Otherwise, the variations of essential amino acids index (EAAI), nutritional value (NI), score ratio coefficient of amino acid (SRC) and biological value (BV) forecasted a diminished amino acids quality under drought stress. Results suggested that drought stress decreased cottonseed yield and deteriorated cottonseed nutritional values. The present research is a leading report describing the influences of drought on the nutritional quality indices in cottonseed. In addition, this study contributes to understanding the response of cottonseed nutritional value to soil moisture stress.