不同蓝莓品种根际phoD基因相关土壤解磷细菌群落结构分析

吴叶娇, 高源, 曹成亮, 蒋瑀霁, 闾连飞, 吴文龙, 蒋继宏, 朱泓, 李荣鹏

南京林业大学学报(自然科学版) ›› 2022, Vol. 46 ›› Issue (2) : 95-102.

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南京林业大学学报(自然科学版) ›› 2022, Vol. 46 ›› Issue (2) : 95-102. DOI: 10.12302/j.issn.1000-2006.202007050
研究论文

不同蓝莓品种根际phoD基因相关土壤解磷细菌群落结构分析

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Community structure of phoD phosphate solubilizing bacteria in rhizosphere soil of different blueberry cultivars

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摘要

【目的】研究不同品种兔眼蓝莓(Vaccinium ashei Reade,简称RB)对phoD(碱性磷酸酶基因)相关土壤解磷细菌群落组成的影响,阐明解磷细菌对土壤磷素的转化以及植物生长的意义。【方法】通过对12个兔眼蓝莓品种根际土壤中phoD进行高通量测序,分析phoD基因相关土壤解磷细菌群落的多样性及组成,解析根际解磷细菌与蓝莓品种以及土壤理化性质之间的相互作用关系。【结果】在12个兔眼蓝莓品种中,蓝莓‘森土里昂’(‘Centurion’, RB4)品种具有最高的群落多样性;蓝莓根际phoD基因相关土壤解磷细菌群落核心细菌群由α-变形菌纲根瘤菌目、红螺菌目、β-变形菌纲伯克氏菌目、γ-变形菌纲黄单胞菌目、海洋螺菌目、假单胞菌目和放线菌门链霉菌目组成;蓝莓根际phoD基因相关土壤解磷细菌群落可以分为RBⅠ、RBⅡ两组,其中RBⅠ组的α-变形菌纲细菌相对丰度显著高于RBⅡ组;土壤总磷(TP)和phoD基因相关土壤解磷细菌群落组成是速效磷(AP)的主要影响因素。【结论】蓝莓不同品种和土壤性质对根际phoD基因相关解磷细菌群落丰度有显著影响,而群落多样性则与对照无显著差异,这可为进一步阐明酸性土壤条件下植物和根际解磷细菌之间的共生关系提供有效的数据支持。

Abstract

【Objective】The objective was to study the effects of different rabbiteye blueberry (Vaccinium ashei Reade, RB) cultivars on the composition of phoD soil phosphate solubilizing bacteria. 【Method】 Using the high-throughput sequencing of phoD (encoding an alkaline phosphatase gene) in rhizosphere soils of 12 rabbiteye blueberry cultivars, the diversity and composition of soil phoD phosphate-solubilizing bacterial communities were analyzed, and interactions between rhizosphere phosphate solubilizing bacteria, blueberry cultivars, and soil properties were analyzed. 【Result】Among the 12 rabbiteye blueberry cultivars, ‘Centurion’ (RB4) showed the highest community diversity; the core rhizosphere phoD bacterial community comprised the α-proteobacteria rhizobiales and rhodospirillales, the β-proteobacteria burkholderiales, the γ-proteobacteria xanthomonadales, oceanospirillales, pseudomonadales, and the actinobacteria streptomycetales. The phoD bacterial communities in the blueberry rhizosphere can be divided into two blueberry groups, RBⅠ and RBⅡ, and the relative abundance of α-proteobacteria in the RBⅠ group was significantly higher. The soil total phosphorus (TP) and phoD bacterial community composition were the main influencing factors of AP. 【Conclusion】Different blueberry cultivars and soil properties had significant effects on the abundance of rhizosphere phoD phosphate-solubilizing bacteria, however, the community diversity did not differ significantly from that of the control. These results provide an effective data support for further elucidation of the symbiotic relationship between plants and phosphate-solubilizing bacteria in the rhizosphere under acidic soil conditions.

关键词

蓝莓 / 根际 / 土壤解磷细菌 / 碱性磷酸酶基因 / 速效磷

Key words

blueberry / rhizosphere / soil phosphate solubilizing bacteria / alkaline phosphatase gene (phoD) / available P

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吴叶娇, 高源, 曹成亮, . 不同蓝莓品种根际phoD基因相关土壤解磷细菌群落结构分析[J]. 南京林业大学学报(自然科学版). 2022, 46(2): 95-102 https://doi.org/10.12302/j.issn.1000-2006.202007050
WU Yejiao, GAO Yuan, CAO Chengliang, et al. Community structure of phoD phosphate solubilizing bacteria in rhizosphere soil of different blueberry cultivars[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2022, 46(2): 95-102 https://doi.org/10.12302/j.issn.1000-2006.202007050
中图分类号: S663   

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基金

江苏省研究生科研与实践创新计划(KYCX20-2320)
江苏省科技计划项目(BE2019399)

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