茄光合机构对强蓝光的抗性主要由隐色素1含量决定。

IF 2.1 4区 生物学 Q2 PLANT SCIENCES
Photosynthetica Pub Date : 2025-01-17 eCollection Date: 2025-01-01 DOI:10.32615/ps.2024.043
V Kreslavski, P Pashkovskiy, A Ashikhmin, A Kosobryukhov, A Shmarev, A Ivanov, V Strokina, M Vereshchagin, G Shirshikova, S I Allakhverdiev
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引用次数: 0

摘要

研究了高强度蓝光照射[HIBL, 72 h, 500/ 1000 μmol(光子)m-2 s-1]下,隐色素1 (CRY1)、光敏色素B2 (phyB2)和光受体信号蛋白-1 (hp-2突变体)缺乏对番茄茄光合作用和前/抗氧化平衡的影响。这些变异均存在明显的光抑制作用和PSII。然而,cry1突变体的光合作用和PSII活性下降幅度最大。其他选项之间的差异不那么明显。cry1突变体对HIBL的低抗性与光合色素、酚类和花青素的减少有关。似乎在HIBL条件下,CRY1和(在较小程度上)phyB2是维持光合作用和抗氧化防御、减轻蓝光诱导的氧化应激所必需的。这项研究扩大了我们对CRY1防御功能的理解,并强调了它在使光合机构适应HIBL中的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The resistance of Solanum lycopersicum photosynthetic apparatus to high-intensity blue light is determined mainly by the cryptochrome 1 content.

The effects of deficiency of cryptochrome 1 (CRY1), phytochrome B2 (phyB2) and the photoreceptor signalling DET-1 protein (hp-2 mutant) on photosynthesis and pro-/antioxidant balance in Solanum lycopersicum exposed to high-intensity blue light [HIBL, 72 h, 500/1,000 μmol(photon) m-2 s-1] were studied. Noticeable photoinhibition of photosynthesis and PSII was found in all these variants. However, the greatest decrease in photosynthesis and PSII activity was observed in the cry1 mutant. The difference among the other options was less pronounced. This low resistance of the cry1 mutant to HIBL is associated with reduced photosynthetic pigments, phenols, and anthocyanins. It appears that under HIBL, CRY1 and, to a lesser extent, phyB2 are required to maintain photosynthesis and antioxidant defence, mitigating blue light-induced oxidative stress. This study expands our understanding of the defence functions of CRY1 and highlights its importance in adapting the photosynthetic apparatus to HIBL.

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来源期刊
Photosynthetica
Photosynthetica 生物-植物科学
CiteScore
5.60
自引率
7.40%
发文量
55
审稿时长
3.8 months
期刊介绍: Photosynthetica publishes original scientific papers and brief communications, reviews on specialized topics, book reviews and announcements and reports covering wide range of photosynthesis research or research including photosynthetic parameters of both experimental and theoretical nature and dealing with physiology, biophysics, biochemistry, molecular biology on one side and leaf optics, stress physiology and ecology of photosynthesis on the other side. The language of journal is English (British or American). Papers should not be published or under consideration for publication elsewhere.
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