草业学报 ›› 2026, Vol. 35 ›› Issue (3): 235-244.DOI: 10.11686/cyxb2025154
马祥1(
), 李中兴1, 杨容尘1, 琚泽亮2, 贾志锋2, 杨培志1(
)
收稿日期:2025-04-24
修回日期:2025-06-25
出版日期:2026-03-20
发布日期:2026-01-19
通讯作者:
杨培志
作者简介:Corresponding author. E-mail: yangpeizhi@126.com基金资助:
Xiang MA1(
), Zhong-xing LI1, Rong-chen YANG1, Ze-liang JU2, Zhi-feng JIA2, Pei-zhi YANG1(
)
Received:2025-04-24
Revised:2025-06-25
Online:2026-03-20
Published:2026-01-19
Contact:
Pei-zhi YANG
摘要:
土壤盐渍化通过盐胁迫影响作物生长发育,探讨燕麦耐盐生理机制对盐渍化治理具有重要意义。以耐盐型‘青永久461’和盐敏感型‘青引2号’燕麦为材料,通过测定盐胁迫下叶片和根系糖类物质及内源激素含量变化,系统分析两种材料在糖代谢途径和激素调控网络中的响应特征。结果表明,盐胁迫下两份燕麦叶片淀粉和蔗糖含量均表现为下降,而葡萄糖和果糖增加,且盐胁迫下敏盐材料‘青引2号’叶片中的葡萄糖和果糖含量分别是‘青永久461’的1.60和1.59倍。此外,盐胁迫下两份燕麦叶片和根系均能够大量合成和积累脱落酸(ABA),造成生长素(IAA)/ABA和玉米素(ZA)/ABA下降,同时调控根系12-氧代植物二烯酸(OPDA)向上运输,叶片OPDA含量积累并以此来促进燕麦气孔关闭来适应盐胁迫。耐盐燕麦‘青永久461’在盐胁迫下能够在体内积累更多的IAA和促进叶片SA的生物合成以抵抗盐胁迫,敏盐燕麦‘青引2号’则通过叶片中积累较高的ZA含量并调控体内茉莉酸(JA)向茉莉酸-异亮氨酸(JA-Ile)的转化以适应盐胁迫。本研究揭示了不同耐盐性燕麦在碳分配策略和激素互作网络的异同,为解析燕麦耐盐机制提供理论依据。
马祥, 李中兴, 杨容尘, 琚泽亮, 贾志锋, 杨培志. 盐胁迫对不同耐盐性燕麦糖类及内源激素含量变化的影响[J]. 草业学报, 2026, 35(3): 235-244.
Xiang MA, Zhong-xing LI, Rong-chen YANG, Ze-liang JU, Zhi-feng JIA, Pei-zhi YANG. The effect of salt stress on sugar and endogenous hormone content in oat varieties with contrasting salt tolerance[J]. Acta Prataculturae Sinica, 2026, 35(3): 235-244.
图1 盐胁迫对‘青永久461’和‘青引2号’淀粉和可溶性糖含量的影响*: P<0.05; **: P<0.01; ***: P<0.001; ns: P>0.05. 不同大写字母和小写字母表示组间差异显著(P<0.05)。下同。Different uppercase and lowercase letters show significant difference at P<0.05 among groups. The same below.
Fig.1 Effects of salt stress on starch and soluble sugar content in ‘Qingyongjiu 461’ and ‘Qingyin No.2’
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