Advantages of compost tea: Promotion of nitrogen influx into the fruit and improvement of fruit nitrogen metabolism in tomato

IF 6.1 2区生物学 Q1 PLANT SCIENCES

Plant Physiology and Biochemistry Pub Date : 2024-10-09 DOI:10.1016/j.plaphy.2024.109184

Wenxin Li , Yuxin Liu , Xinru Chai , Jiaxing He , Chang Liu , Jianming Li

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引用次数: 0

Abstract

The use of compost tea is important to improve food safety. However, the effect of compost tea on N uptake and partitioning in tomato is unclear. In this study, we measured temporal and spatial changes in nitrogen content, enzyme activities, and expression levels of nitrogen transporters genes in different organs of tomato treated with five nutrient solutions. The results showed that the expression levels of ammonium transporter protein genes (AMT1s) increased and that of a nitrogen transporters gene (NRT2.1) decreased under treatment with compost tea, which promoted NH₄⁺ transport to the fruit and reduced nutrient wastage compared with the response to chemical fertilizers. In addition, the lowermost leaves on the stem showed reduced nitrate content, faster metabolism, and decreased chlorophyll a content, but fruit yield was not increased, in compost tea-treated plants. These changes were dependent on the expression level of the glutamine synthetase gene (GS1.1), which was increased in leaves and decreased in fruit. Compost tea influenced the expression of critical genes in the fruits and leaves, and improved the competitiveness of sexual reproductive growth as a sink for nitrogen. However, the benefits of compost tea were reduced when it was mixed chemical fertilizers. This research establishes a theoretical framework for optimization of organic vegetable cultivation and promoting the widespread production of organic crops.

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堆肥茶的优点：促进番茄果实的氮流入，改善果实的氮代谢

使用堆肥茶对提高食品安全非常重要。然而，堆肥茶对番茄氮吸收和分配的影响尚不清楚。本研究测定了用五种营养液处理的番茄不同器官中氮含量、酶活性和氮转运体基因表达水平的时空变化。结果表明，与施用化肥相比，在堆肥茶处理下，铵转运蛋白基因（AMT1s）的表达水平升高，氮转运体基因（NRT2.1）的表达水平降低，促进了NH4+向果实的转运，减少了养分的浪费。此外，经堆肥茶处理的植株，茎最下部叶片的硝酸盐含量降低，新陈代谢加快，叶绿素 a 含量减少，但果实产量没有增加。这些变化取决于谷氨酰胺合成酶基因（GS1.1）的表达水平，该基因在叶片中的表达量增加，而在果实中的表达量减少。堆肥茶影响了果实和叶片中关键基因的表达，提高了有性生殖生长作为氮汇的竞争力。然而，当堆肥茶与化肥混合使用时，堆肥茶的效益就会降低。这项研究为优化有机蔬菜栽培和促进有机作物的广泛生产建立了理论框架。

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.