|Table of Contents|

Study on the Growth-promoting Effect of Bacillus methylotrophicus and Its Mechanism

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年12
Page:
1-7
Research Field:
Publishing date:

Info

Title:
Study on the Growth-promoting Effect of Bacillus methylotrophicus and Its Mechanism
Author(s):
WANG YananCHEN YingyingWU YuhongWU HaixiaBAO ZenghaiMA Guizhen
(Jiangsu Key Laboratory of Marine Bioresources and Eco-environment,Jiangsu Ocean University,Lianyungang,Jiangsu 222005)
Keywords:
Bacillus methylotrophicuscucumbersiderophoreACC deaminaseIAA
PACS:
-
DOI:
10.11937/bfyy.20194395
Abstract:
Taking Bacillus methylotrophicus BMF 04 as the test material,using plate transparent circle method,colorimetry and pot experiment,to clarify the growth promoting effect and mechanism of BMF 04 strain,the effects of different treatment methods of marine bacteria BMF 04 fermentation broth on cucumber seedling growth,nitrogen fixation,ability in decomposing of phosphate and silicate,production of IAA,siderophore and ACC deaminase activity of the strain were studied.The results showed that the cucumber seeds treated with BMF 04 strain fermentation broth and its cultivation soil could significantly improve the emergence rate,fresh weight of single plant abaveground and underground,stem diameter and length,number of roots single,of which the best soil mixing method,three-leaf seedling stem diameter 4.7 mm,plant height of 12.4 cm,the fresh weight of the aboveground part and the fresh weight of the underground part of a single plant were 9.49 g and 0.95 g respectively,number of roots was 152 radical per plant;BMF 04 strain had the effect of nitrogen fixation,could produce IAA,siderophore and ACC deaminase,where in the siderophore and IAA production with the extension of the incubation time gradually increased,the relative content of siderophore reached 34.82% at 24 hours,and the secretion of 32 hours IAA reached 2.647 mg?L-1 at the maximum,then the secretion of both gradually decreased;the strain did not had the ability in decomposing of phosphate and silicate.

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Last Update: 2020-08-19