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首页> 外文期刊>Plant Physiology and Biochemistry >The role of isoflavone metabolism in plant protection depends on the rhizobacterial MAMP that triggers systemic resistance against Xanthomonas axonopodis pv. glycines in Glycine max (L.) Merr. cv. Osumi
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The role of isoflavone metabolism in plant protection depends on the rhizobacterial MAMP that triggers systemic resistance against Xanthomonas axonopodis pv. glycines in Glycine max (L.) Merr. cv. Osumi

机译：异黄酮代谢在植物保护中的作用取决于根瘤菌MAMP，后者可引发对轴生黄单胞菌pv的系统抗性。 Glycine max（L.）Merr。中的甘氨酸简历。大澄

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Glycine max (L.) Merr. plays a crucial role in both the field of food and the pharmaceutical industry due to their input as plant protein and to the benefits of isoflavones (IF) for health. In addition, IF play a key role in nodulation and plant defense and therefore, an increase in IF would be desirable for better field performance. IF are secondary metabolites and therefore, inducible, so finding effective agents to increase IF contents is interesting. Among these agents, plant growth promoting rhizobacteria (PGPR) have been used to trigger systemic induction of plant's secondary metabolism through their microbe associated molecular patterns (MAMPs) that fit in the plant's receptors to start a systemic response. The aim of this study was to evaluate the ability of 4 PGPR that had a contrasted effect on IF metabolism, to protect plants against biotic stress and to establish the relation between IF profile and the systemic response triggered by the bacteria. Apparently, the response involves a lower sensitivity to ethylene and despite the decrease in effective photosynthesis, growth is only compromised in the case of M84, the most effective in protection. All strains protected soybean against Xanthomonas axonopodis pv. glycines (M84 >N5.18 >Aur9>N21.4) and only M84 and N5.18 involved IF. N5.18 stimulated accumulation of IF before pathogen challenge. M84 caused a significant increase on IF only after pathogen challenge and N21.4 caused a significant increase on IF content irrespective of pathogen challenge. Aur9 did not affect IF. These results point out that all 4 strains have MAMPs that trigger defensive metabolism in soybean. Protection induced by N21.4 and Aur9 involves other metabolites different to IF and the role of IF in defence depends on the previous metabolic status of the plant and on the bacterial MAMP.
机译：大豆最大（L.）由于它们作为植物蛋白的投入以及异黄酮（IF）对健康的益处，因此在食品和制药行业中都起着至关重要的作用。此外，中频在结瘤和植物防御中起关键作用，因此，为了提高田间性能，增加中频将是可取的。 IF是次生代谢产物，因此是可诱导的，因此寻找提高IF含量的有效试剂非常有趣。在这些试剂中，植物生长促进根瘤菌（PGPR）已用于通过其微生物相关的分子模式（MAMP）来触发系统诱导植物的次生代谢，这些分子模式适合植物的受体，从而开始系统性反应。这项研究的目的是评估对IF代谢有相反作用的4 PGPR的能力，以保护植物免受生物胁迫，并建立IF谱与细菌触发的系统应答之间的关系。显然，该反应涉及对乙烯的敏感性降低，尽管有效的光合作用降低了，但只有在保护作用最有效的M84的情况下，生长才受到损害。所有菌株均能保护大豆免受轴索黄单胞菌的侵害。甘氨酸（M84> N5.18> Aur9> N21.4），只有M84和N5.18参与IF。 N5.18在病原体攻击之前刺激了IF的积累。 M84仅在病原体攻击后才引起IF的显着增加，而N21.4则与病原体攻击无关而使IF含量显着增加。 Aur9不会影响IF。这些结果指出，所有4个菌株均具有触发大豆防御代谢的MAMP。由N21.4和Aur9诱导的保护涉及与IF不同的其他代谢产物，而IF在防御中的作用取决于植物先前的代谢状态和细菌MAMP。

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