Effects of exogenous zinc (ZnSO4·7H2O) on photosynthetic characteristics and grain quality of hybrid rice

IF 6.1 2区生物学 Q1 PLANT SCIENCES

Plant Physiology and Biochemistry Pub Date : 2023-09-28 DOI:10.1016/j.plaphy.2023.108049

Gao Shang , Zhou Meng , Zhou Qinyue , Xu Feng , Weiwei Zhang

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Abstract

Rice is an important food crop and zinc (Zn) is a beneficial microelement. However, there are few reports on the effect of zinc on yield and physiological characteristics of rice. In this study, exogenous zinc (ZnSO₄·7H₂O) was applied on plant to explore the effects of zinc on rice yield, quality and photosynthetic capacity. The results showed that appropriate concentration of zinc could increase the net photosynthetic rate (Pn) of rice leaves, and Zn2 (2 mg/L ZnSO₄•7H₂O) treatment was the most significant. However, the Zn treatment had no positive effect on rice yield except under the concentration of Zn2. Meanwhile, the result showed that Zn treatment could increase chalkiness degree (CD) and chalky grain rate (CGR), decreased amylose content (AC), increased protein content and changed protein composition of rice. The above indexes were most significant in Zn2 treatment. In addition, the Zn2 treatment significantly increased rapid viscosity analyzer (RVA) of rice. In conclusion, the results of this study suggested that Zn treatment could enhance the photosynthetic capacity of rice leaves, and improve the processing quality, taste quality and nutritional quality of rice. However, it will have a negative impact on the appearance quality of rice and cannot be used to increase rice production. This study will provide a basis for the application of zinc in rice production.

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外源锌(ZnSO4·7H2O)对杂交水稻光合特性和籽粒品质的影响

水稻是重要的粮食作物，锌是一种有益的微量元素。然而，关于锌对水稻产量和生理特性影响的报道很少。本研究采用外源锌(ZnSO4·7H2O)处理水稻，探讨锌对水稻产量、品质和光合能力的影响。结果表明，适宜浓度的锌处理可提高水稻叶片的净光合速率，其中以Zn2 (2 mg/L ZnSO4•7H2O)处理效果最为显著。除Zn2浓度外，锌处理对水稻产量无显著影响。结果表明，锌处理可提高水稻垩白度(CD)和垩白粒率(CGR)，降低直链淀粉含量(AC)，提高蛋白质含量，改变蛋白质组成。以上指标均以Zn2处理最显著。此外，Zn2处理显著提高了水稻的快速粘度分析仪(RVA)。综上所述，锌处理可以增强水稻叶片的光合能力，改善水稻的加工品质、口感品质和营养品质。但是，它会对大米的外观质量产生负面影响，不能用于增加大米产量。本研究将为锌在水稻生产中的应用提供依据。

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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来源期刊

Plant Physiology and Biochemistry 生物-植物科学

CiteScore

11.10

自引率

3.10%

发文量

410

审稿时长

33 days

期刊介绍： Plant Physiology and Biochemistry publishes original theoretical, experimental and technical contributions in the various fields of plant physiology (biochemistry, physiology, structure, genetics, plant-microbe interactions, etc.) at diverse levels of integration (molecular, subcellular, cellular, organ, whole plant, environmental). Opinions expressed in the journal are the sole responsibility of the authors and publication does not imply the editors'' agreement. Manuscripts describing molecular-genetic and/or gene expression data that are not integrated with biochemical analysis and/or actual measurements of plant physiological processes are not suitable for PPB. Also "Omics" studies (transcriptomics, proteomics, metabolomics, etc.) reporting descriptive analysis without an element of functional validation assays, will not be considered. Similarly, applied agronomic or phytochemical studies that generate no new, fundamental insights in plant physiological and/or biochemical processes are not suitable for publication in PPB. Plant Physiology and Biochemistry publishes several types of articles: Reviews, Papers and Short Papers. Articles for Reviews are either invited by the editor or proposed by the authors for the editor''s prior agreement. Reviews should not exceed 40 typewritten pages and Short Papers no more than approximately 8 typewritten pages. The fundamental character of Plant Physiology and Biochemistry remains that of a journal for original results.