Characteristics of endophytic bacteria from Polygonum hydropiper and their use in enhancing P-phytoextraction
Characteristics of endophytic bacteria from Polygonum hydropiper and their use in enhancing P-phytoextraction
复制标题
水蓼内生细菌的特性及其在提高P-植物提取中的应用
DOI：
10.1007/s11104-020-04456-w
复制
发表时间：
2020-02
期刊：
影响因子：
4.9
通讯作者：
Min Xie
中科院分区：
文献类型：
--
作者：
Daihua Ye;Tingxuan Li;Jiangbo Liu;Yuanjun Yi;Likou Zou;Xizhou Zhang;Min Xie
内生菌因其在植物中的生态作用和在植物修复中的潜在应用而具有重要意义。分离具有植物促生长（PGP）特性的内生细菌作为接种剂，以提高植物修复效率；然而，很少有人尝试从磷（P）积累植物中分离细菌并研究它们在磷植物提取中的作用。对蓄磷草本植物蓼蓼的内生细菌进行了分离和鉴定。对PGP的性状进行了表征，包括吲哚-3-乙酸（IAA）、铁载体、磷酸溶解等。选择一些内生菌作为接种剂，在高磷土壤中进行盆栽试验，研究其在植物提取磷中的作用。 35 个分离株能够耐受高磷，并分为 10 个分类群。吲哚-3-乙酸转化为 IAA 酸和铁载体的产量取决于菌株种类。这些菌株的磷酸三钙 (TCP) 溶解活性与 pH 值降低但有机酸产量增加相关，而植酸钙溶解活性与 pH 值降低但酸性和碱性磷酸酶活性增加相关。 6种接种剂中，除SLs08外，其余5株均促进水蓼茎叶生长。接种SLr02、SLr15、SLs13和SLs18的水荠显示出比对照植物显着更高的根长度和表面积。接种SLr15、SLs13和SLs18显着增强了水荠茎叶磷的积累。蓼蓼中存在具有PGP性状的内生细菌，菌株SLr15、SLs13和SLs18极大地促进了植物生长和地上部磷的积累，是最有潜力作为PGP接种剂辅助蓼植物提取磷的潜力。
Endophytes are significant for their ecological role in plants and potential applications in phytoremediation. Endophytic bacteria with plant-growth-promoting (PGP) characteristics are isolated as inoculants to enhance phytoremediation efficiency; however, few attempts have been made to isolate bacteria from phosphorus (P)-accumulating plants and study their roles in P-phytoextraction. Endophytic bacteria of P-accumulating herb Polygonum hydropiper were isolated and identified. The PGP traits including indole-3-acetic acid (IAA), siderophores, phosphate-solubilization etc. were characterized. Some endophytes were selected as the inoculants for a pot experiment in high P soil to investigate their role in P-phytoextraction. Thirty-five isolates were tolerant of high P and classified into 10 taxonomic groups. The production of indole-3-acetic acid into IAA acid and siderophores was dependent on strain species. Tricalcium phosphate (TCP)-solubilizing activity of these strains was associated with a decrease of pH but increases of organic acids production, while phytin-solubilizing activity was associated with a decrease of pH but increases of acid and alkaline phosphatase activities. In the six inoculants, five strains promoted stem and leaf growth of Polygonum hydropiper except for SLs08. P. hydropiper with inoculation of SLr02, SLr15, SLs13 and SLs18 showed significantly higher root length and surface area than the control plants. The inoculation with SLr15, SLs13 and SLs18 significantly enhanced stem and leaf P accumulation of P. hydropiper. Endophytic bacteria with PGP traits exist in Polygonum hydropiper and strains SLr15, SLs13 and SLs18 greatly promoted plant growth and shoot P accumulation, offering the most potential as PGP inoculants for assisting P. hydropiper in P-phytoextraction.
登录
查看更多内容
影响因子：
8.8
作者：
Braud, Armelle;Jezequel, Karine;Lebeau, Thierry
通讯作者：
Lebeau, Thierry
影响因子：
4.9
作者：
Marra, Leandro Marciano;Fonseca Sousa Soares, Claudio Roberto;de Souza Moreira, Fatima Maria
通讯作者：
de Souza Moreira, Fatima Maria
利用蓼作为磷积累剂从猪粪改良土壤中植物提取磷的实用性
影响因子：
4.8
作者：
Liu Dan;Ye Daihua;Li Tingxuan;Zheng Zicheng;Zhang Xizhou
通讯作者：
Zhang Xizhou
影响因子：
2.4
作者：
P. Pagliari;C. Laboski
通讯作者：
P. Pagliari;C. Laboski
影响因子：
5
作者：
Forchetti, G.;Masciarelli, O.;Abdala, G.
通讯作者：
Abdala, G.