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首页> 外文期刊>Scientia horticulturae >Flavonoids and amino acid regulation in Capsicum annuum L. by endophytic fungi under different heat stress regimes.
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Flavonoids and amino acid regulation in Capsicum annuum L. by endophytic fungi under different heat stress regimes.

机译：不同热胁迫条件下内生真菌对辣椒中黄酮和氨基酸的调控

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摘要

We investigated the effects of gibberellins producing endophytic fungus Penicillium resedanum LK6 on Capsicum annuum L. plant growth during 7 and 15 days of heat (40 degrees C) stress. The results showed that endophyte-associated plants had higher number of leaves per plant and biomass as compared to non-inoculated control plants. The survival rate and leaf damage was significantly lower in endophyte-treated plants than control under stress. Control plants had significantly higher leaf damage which also coupled with increased level of electrolytes and lipid peroxidation under heat stress. Conversely, these effects were lower in P. resedanum-associated plants. The endophyte-inoculated plants had higher nutrients contents as compared to control plants. P. resedanum-infestation also modulated amino acid metabolism. Proline accumulation was significant in endophyte-inoculated plant than control under stress. Flavonoids (daidzin, daidzein and m-glycitin) were synthesized in higher quantities to reduce the negative impacts of heat stress in P. resedanum plants than control. In conclusion, the findings showed an ameliorative effect of P. resedanum-association with pepper plants under heat stress, which can be a useful symbiotic strategy for expanding agriculture production with changing global temperature regimes.
机译：我们调查了赤霉素产生内生真菌Resedanum LK6对辣椒在热（40摄氏度）的7天和15天植物辣椒生长的影响。结果表明，与未接种的对照植物相比，与内生菌相关的植物的单株叶片和生物量更高。内生植物处理过的植物的存活率和叶片损伤显着低于对照。对照植物具有明显更高的叶片损伤，还与热胁迫下电解质和脂质过氧化水平的升高有关。相反，这些作用在芦苇假单胞菌相关植物中较低。与对照植物相比，接种内生菌的植物具有更高的养分含量。芦苇假单胞菌的侵染还调节氨基酸代谢。内生植物接种的植物中脯氨酸的积累在胁迫下比对照显着。与对照相比，合成了大量的类黄酮（大豆苷，黄豆苷元和间甘醇三肽）可减少红景天植株热应激的负面影响。总之，研究结果表明，在高温胁迫下，芦苇假单胞菌与辣椒植物的关系得到改善，这可能是一种有用的共生策略，可以随着全球温度制度的变化而扩大农业生产。

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