干旱区生态环境知识资源中心(Arid): A Bacterium Isolated From Soil in a Karst Rocky Desertification Region Has Efficient Phosphate-Solubilizing and Plant Growth-Promoting Ability

Arid

DOI	10.3389/fmicb.2020.625450
	A Bacterium Isolated From Soil in a Karst Rocky Desertification Region Has Efficient Phosphate-Solubilizing and Plant Growth-Promoting Ability
	Xie, Jinge; Yan, Zongqiang; Wang, Guifen; Xue, Wenzhi; Li, Cong; Chen, Xiwen; Chen, Defu
通讯作者	Chen, DF (corresponding author), Nankai Univ, Dept Genet & Cell Biol, Coll Life Sci, Tianjin, Peoples R China. ; Chen, XW (corresponding author), Nankai Univ, Dept Biochem & Mol Biol, Coll Life Sci, Tianjin, Peoples R China.
来源期刊	FRONTIERS IN MICROBIOLOGY
ISSN	1664-302X
出版年	2021
卷号	11
英文摘要	Phosphorus in the soil accessible to plants can easily be combined with calcium ion, the content of which is high in karst rocky desertification (KRD) regions, thereby resulting in a low utilization efficiency of phosphorus. The application of phosphate-solubilizing bacteria (PSB) from the KRD region would facilitate enhanced phosphate availability in the soil. In the present study, the strains belonging to Acinetobacter, Paraburkholderia, and Pseudomonas with efficient phosphate-solubilizing ability were isolated from fruit tree rhizosphere soils in KRD regions. Particularly, Acinetobacter sp. Ac-14 had a sustained and stable phosphate-solubilizing ability (439-448 mg/L, 48-120 h). Calcium carbonate decreased the phosphate-solubilizing ability in liquid medium; however, it did not affect the solubilization index in agar-solidified medium. When cocultivated with Arabidopsis thaliana seedling, Ac-14 increased the number of lateral roots, fresh weight, and chlorophyll content of the seedlings. Metabolomics analysis revealed that Ac-14 could produce 23 types of organic acids, majorly including gluconic acid and D-(-)-quinic acid. Expression of Ac-14 glucose dehydrogenase gene (gcd) conferred Pseudomonas sp. Ps-12 with a sustained and stable phosphate-solubilizing ability, suggesting that the production of gluconic acid is an important mechanism that confers phosphate solubilization in bacteria. Moreover, Ac-14 could also produce indole acetic acid and ammonia. Collectively, the isolated Ac-14 from KRD regions possess an efficient phosphate-solubilizing ability and plant growth-promoting effect which could be exploited for enhancing phosphorus availability in KRD regions. This study holds significance for the improvement of soil fertility and agricultural sustainable development in phosphorus-deficient KRD regions.
英文关键词	phosphate-solubilizing bacteria plant growth-promoting Acinetobacter karst rocky desertification organic acid
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000617778600001
WOS类目	Microbiology
WOS研究方向	Microbiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347905
作者单位	[Xie, Jinge; Yan, Zongqiang; Wang, Guifen; Li, Cong; Chen, Defu] Nankai Univ, Dept Genet & Cell Biol, Coll Life Sci, Tianjin, Peoples R China; [Xue, Wenzhi; Chen, Xiwen] Nankai Univ, Dept Biochem & Mol Biol, Coll Life Sci, Tianjin, Peoples R China
推荐引用方式 GB/T 7714	Xie, Jinge,Yan, Zongqiang,Wang, Guifen,et al. A Bacterium Isolated From Soil in a Karst Rocky Desertification Region Has Efficient Phosphate-Solubilizing and Plant Growth-Promoting Ability[J],2021,11.
APA	Xie, Jinge.,Yan, Zongqiang.,Wang, Guifen.,Xue, Wenzhi.,Li, Cong.,...&Chen, Defu.(2021).A Bacterium Isolated From Soil in a Karst Rocky Desertification Region Has Efficient Phosphate-Solubilizing and Plant Growth-Promoting Ability.FRONTIERS IN MICROBIOLOGY,11.
MLA	Xie, Jinge,et al."A Bacterium Isolated From Soil in a Karst Rocky Desertification Region Has Efficient Phosphate-Solubilizing and Plant Growth-Promoting Ability".FRONTIERS IN MICROBIOLOGY 11(2021).