Bacillus megaterium Compensates for Growth Inhibition from Phosphorus Deficiency by Improving Photosynthetic Capacity, Changing Antioxidant Potential, and Regulating Non-Structural Carbohydrate Concentrations in Glycyrrhiza uralensis

IF 0.7 4区 农林科学 Q3 AGRONOMY Emirates Journal of Food and Agriculture Pub Date : 2023-12-23 DOI:10.9755/ejfa.2023.3200
Yali Zhang, Jing Gao, Rui Li, Yonggang Yan, Gang Zhang, Nan Wang, Wenbo Wang, Jiakun Yan
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引用次数: 0

Abstract

This study assessed the effect of Bacillus megaterium on seedling growth of Glycyrrhiza uralensis Fisch. under control and phosphorus (P) deficiency conditions. The results showed that P deficiency improved 1) G. uralensis root growth, 2) superoxide dismutase, catalase, and peroxidase activities, 3) inorganic P, starch, and soluble sugar contents in roots, 4) dissipated energy flux per reaction center, trapped energy flux per reaction center, and absorption flux per reaction center, and 5) net photosynthetic rate, stomatal conductance, transpiration rate, maximum fluorescence intensity after dark adaptation, and variable fluorescence. However, P deficiency significantly decreased chlorophyll and carotenoid contents in G. uralensis, but enhanced chlorophyll and carotenoid contents in B. megaterium. Our findings on the regulatory mechanisms of B. megaterium in response to P starvation hold promise for improving the success of G. uralensis cultivation. Keywords: Bacillus megaterium; Glycyrrhiza uralensis Fisch; Phosphorus deficiency; Chlorophyll fluorescence; Antioxidant enzymes superoxide; Non-structural carbohydrate
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巨型芽孢杆菌通过提高光合能力、改变抗氧化潜能和调节甘草中的非结构性碳水化合物浓度来补偿缺磷对生长的抑制作用
本研究评估了在控制和缺磷条件下大型芽孢杆菌对甘草幼苗生长的影响。结果表明,缺磷改善了:1)甘草根的生长;2)超氧化物歧化酶、过氧化氢酶和过氧化物酶的活性;3)根中无机磷、淀粉和可溶性糖的含量;4)每个反应中心的耗散能通量、每个反应中心的捕获能通量和每个反应中心的吸收通量;5)净光合速率、气孔导度、蒸腾速率、暗适应后的最大荧光强度和可变荧光。然而,缺磷会明显降低 G. uralensis 的叶绿素和类胡萝卜素含量,但会提高 B. megaterium 的叶绿素和类胡萝卜素含量。我们关于巨球藻对缺钾反应的调控机制的研究结果有望提高黑藻的栽培成功率。 关键词大肠杆菌 甘草磷缺乏 叶绿素荧光 抗氧化酶 超氧化物 非结构性碳水化合物
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来源期刊
Emirates Journal of Food and Agriculture
Emirates Journal of Food and Agriculture AGRONOMYFOOD SCIENCE & TECHNOLOGY&nb-FOOD SCIENCE & TECHNOLOGY
CiteScore
1.80
自引率
0.00%
发文量
18
期刊介绍: The "Emirates Journal of Food and Agriculture [EJFA]" is a unique, peer-reviewed Journal of Food and Agriculture publishing basic and applied research articles in the field of agricultural and food sciences by the College of Food and Agriculture, United Arab Emirates University, United Arab Emirates.
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