Isolation of micropropagated strawberry endophytic bacteria and assessment of their potential for plant growth promotion

被引：137

作者：

Dias, Armando C. F. ^{[1
,2
,3
]}

Costa, Francisco E. C. ^{[3
]}

Andreote, Fernando D. ^{[2
]}

Lacava, Paulo T. ^{[1
]}

Teixeira, Manoel A. ^{[3
]}

Assumpcao, Laura C. ^{[1
]}

Araujo, Welington L. ^{[1
]}

Azevedo, Joao L. ^{[1
]}

Melo, Itamar S. ^{[2
]}

机构：

[1] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Dept Genet, BR-13400970 Piracicaba, Brazil

[2] Embrapa Meio Ambiente, Lab Environm Microbiol, Jaguariuna, SP, Brazil

[3] Univ Vale Sapucai UNIVAS, Microbiol Lab, Pouso Alegre, MG, Brazil

来源：

WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY | 2009年 / 25卷 / 02期

关键词：

Auxin production; Phosphate solubilization; In vitro cultivation; Fragaria ananassa; WEATHERING DESERT PLANTS; SOMATIC EMBRYOGENESIS; MICROBIAL-POPULATIONS; XYLELLA-FASTIDIOSA; GENETIC DIVERSITY; WHEAT; MICROORGANISMS; IDENTIFICATION; BIOSYNTHESIS; COLONIZATION;

D O I：

10.1007/s11274-008-9878-0

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Twenty endophytic bacteria were isolated from the meristematic tissues of three varieties of strawberry cultivated in vitro, and further identified, by FAME profile, into the genera Bacillus and Sphingopyxis. The strains were also characterized according to indole acetic acid production, phosphate solubilization and potential for plant growth promotion. Results showed that 15 strains produced high levels of IAA and all 20 showed potential for solubilizing inorganic phosphate. Plant growth promotion evaluated under greenhouse conditions revealed the ability of the strains to enhance the root number, length and dry weight and also the leaf number, petiole length and dry weight of the aerial portion. Seven Bacillus spp. strains promoted root development and one strain of Sphingopyxis sp. promoted the development of plant shoots. The plant growth promotion showed to be correlated to IAA production and phosphate solubilization. The data also suggested that bacterial effects could potentially be harnessed to promote plant growth during seedling acclimatization in strawberry.

引用

页码：189 / 195

页数：7

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