Palmitic acid mediated change of rhizosphere and alleviation of Fusarium wilt disease in watermelon.
Palmitic acid mediated change of rhizosphere and alleviation of Fusarium wilt disease in watermelon.
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DOI：
10.1016/j.sjbs.2021.03.040
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发表时间：
2021-06
影响因子：
4.4
通讯作者：
Pan K
中科院分区：
文献类型：
--
作者：
Ma K;Kou J;Khashi U Rahman M;Du W;Liang X;Wu F;Li W;Pan K
根渗出液或腐渣中的棕榈酸（PA）可以减少土传疾病的发生，促进某些作物的生长。然而，对PA对土壤传播病原体和微生物群落的影响知之甚少。本文研究了PA对西瓜整体微生物群落和尖孢镰刀菌种群的影响。niveum(丰)。在体外试验中考察了PA对Fon菌丝生长和孢子产生的影响，在盆栽试验中评价了PA对Fon、细菌总数、真菌总数和微生物群落的影响。结果表明，所有浓度的PA均能抑制Fon菌丝生长和孢子产生。盆栽试验结果表明，0.5 mM和1 mM PA降低了Fon，但增加了细菌总数，0.5 mM和1 mM PA促进了土壤类型向细菌土壤的转变。同时，0.5 mM PA和1 mM PA改变了根际微生物群落组成，降低了与疾病严重程度极显著（p < 0.01）相关的2个细菌操作分类单位（OTUs）和2个真菌操作分类单位（OTUs）的相对丰度，提高了与疾病严重程度极显著（p < 0.01）负相关的4个细菌和2个真菌的相对丰度。上述结果表明，施用PA可降低西瓜根际枯病菌的数量，改变根际微生物组成，降低枯萎病的严重程度，促进西瓜的生长。
Palmitic acid (PA) in root exudates or decaying residues can reduce the incidence of soil-borne diseases and promote the growth of some crop plants. However, the effects of PA on soil-borne pathogens and microbial communities are poorly understood. Here, we investigate the effects of PA on overall watermelon microbial communities and the populations of Fusarium oxysporum f.sp. niveum (Fon). The effects of PA on the mycelial growth and spore production of Fon were tested in vitro, while its effects on Fon, total bacteria and total fungi populations, and microbial communities were evaluated in a pot experiment. The results revealed that all test concentrations of PA inhibited Fon mycelia growth and spore production. The pot experiment showed that 0.5 mM and 1 mM PA reduced Fon but increased total bacteria populations, and 0.5 mM and 1 mM PA 0.5 mM and 1 mM PA promoted the change to a soil type of bacteria soil. Meanwhile, 0.5 mM PA and 1 mM PA altered the community composition of the rhizosphere microorganisms and reduced the relative abundance of two bacterial operational taxonomic units (OTUs) and the two fungal OTUs that were significantly (p < 0.01) related with disease severity and increased that of four bacterial OTUs and the two fungal that were highly significantly (p < 0.01) negatively correlated with the disease severity. These results suggest that application of PA decreased the populations of Fon, changed the rhizosphere microbial composition, reduced the disease severity of Fusarium wilt, and promoted the growth of watermelon.
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影响因子：
4.8
作者：
Li Wei-hua;Liu Qi-zhi
通讯作者：
Liu Qi-zhi
影响因子：
5
作者：
Bobadilla Fazzini RA;Levican G;Parada P
通讯作者：
Parada P
DOI：
10.1016/j.ibiod.2014.01.006
发表时间：
2014-04-01
影响因子：
4.8
作者：
Abed, Raeid M. M.;Al-Sabahi, Jamal;Al-Hinai, Manal
通讯作者：
Al-Hinai, Manal
影响因子：
5.1
作者：
Li, XC;Jacob, MR;Clark, AM
通讯作者：
Clark, AM
影响因子：
4
作者：
Kim, D.;Lee, J. S.;Lee, C. H.
通讯作者：
Lee, C. H.