Combining plant growth-promoting bacteria as a tool to improve the metabolism and productivity of sugarcane

IF 6.1 2区生物学 Q1 PLANT SCIENCES

Plant Physiology and Biochemistry Pub Date : 2025-05-02 DOI:10.1016/j.plaphy.2025.109980

Mariley Fonseca , João William Bossolani , Israel Alves Filho , Sirlene Lopes de Oliveira , Tatiani Mayara Galeriani , Fernando Dini Andreote , Carlos Alexandre Costa Crusciol

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引用次数: 0

Abstract

Sugarcane (Saccharum spp.) is a globally important crop, and strategies to minimize the negative impacts of its cultivation and enhance its development are highly relevant. Plant growth-promoting bacteria (PGPB) can sustainably foster plant growth in agricultural systems and mitigate adverse effects of stress on plants. This is the first study to investigate the combined use of Azospirillum brasilense (Ab) and Nitrospirillum amazonense (Na), two microorganisms widely applied in agricultural systems, aiming to elucidate their effects on the nutritional status, biochemical responses, and productive parameters of sugarcane. Greenhouse experiments were conducted under controlled water and temperature conditions with four treatments: application of Ab, Na, or Ab + Na (Mix) or no PGPB application (control). Sugarcane was cultivated until the middle of the rapid growth stage. To validate the results, the greenhouse trials were replicated under field conditions at two sites (Maracaí-SP and Pradópolis-SP). The results showed that the inoculation of sugarcane with plant growth-promoting bacteria (PGPB), particularly Ab and Mix, enhanced nutritional aspects, especially N content. These increases were significant under greenhouse (p ≤ 0.05) and field conditions (p ≤ 0.10). Additionally, inoculation reduced oxidative stress and improved photosynthetic parameters, such as net photosynthetic rate, water use efficiency, and carboxylation efficiency. These cascading effects contributed to significant gains in crop productivity, with an average increase in stalk yield of 10.9 % for Ab and 12.2 % for Mix across both environments. Similarly, there was an increase in sugar yield per hectare, with gains of 13.3 % for Ab and 13.7 % for Mix compared to the control. These findings highlight the potential of PGPB as a sustainable strategy to enhance crop productivity and resilience, contributing to environmentally balanced agricultural systems. Although the benefits of PGPB were evident, differences between Ab and Mix were not pronounced. Therefore, additional studies are needed to explore the potential of these combinations under adverse conditions, when their effects could be more pronounced.

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结合植物促生菌作为提高甘蔗代谢和生产力的工具

甘蔗（Saccharum spp.）是一种全球重要作物，减少其种植的负面影响并促进其发展的策略具有重要意义。植物生长促进菌（Plant growth promoting bacteria， PGPB）能够在农业系统中持续促进植物生长，减轻逆境对植物的不利影响。本文首次研究了两种广泛应用于农业系统的微生物巴西氮螺旋藻（Ab）和亚马逊硝化螺旋藻（Na）的联合利用，旨在阐明它们对甘蔗营养状况、生化反应和生产参数的影响。温室试验在控制水分和温度的条件下进行，采用Ab、Na、Ab + Na（混合）和不施用PGPB（对照）4种处理。甘蔗一直种植到快速生长期的中期。为了验证结果，在两个站点（Maracaí-SP和Pradópolis-SP）的田间条件下重复了温室试验。结果表明，接种植物生长促进菌（PGPB），特别是Ab和Mix，提高了甘蔗的营养成分，特别是氮含量。温室条件下（p≤0.05）和田间条件下（p≤0.10）增产显著。此外，接种降低了氧化应激，提高了净光合速率、水分利用效率和羧化效率等光合参数。这些级联效应有助于作物生产力的显著提高，在两种环境下，Ab和Mix的秸秆产量平均提高10.9%和12.2%。同样，每公顷糖产量也有所增加，与对照相比，Ab和Mix分别增加了13.3%和13.7%。这些发现突出了PGPB作为一种可持续战略的潜力，可以提高作物生产力和抗灾能力，促进环境平衡的农业系统。虽然PGPB的益处是明显的，但Ab和Mix之间的差异并不明显。因此，需要进一步的研究来探索这些组合在不利条件下的潜力，当它们的影响可能更明显时。

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.