Purple Phototrophic Bacterium Enhances Stevioside Yield by Stevia rebaudiana Bertoni via Foliar Spray and Rhizosphere Irrigation

被引：12

作者：

Wu, Jing ^{[1
,2
,3
,4
]}

Wang, Yiming ^{[1
,2
,3
]}

Lin, Xiangui ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Jiangsu, Peoples R China

[2] Hong Kong Baptist Univ, Joint Open Lab Soil & Environm, Nanjing, Jiangsu, Peoples R China

[3] Chinese Acad Sci, Inst Soil Sci, Nanjing, Jiangsu, Peoples R China

[4] Univ Chinese Acad Sci, Beijing, Peoples R China

来源：

PLOS ONE | 2013年 / 8卷 / 06期

关键词：

RHODOBACTER-SPHAEROIDES; 5-AMINOLEVULINIC ACID; CHLOROPHYLL CONTENT; BIOMASS YIELD; GROWTH; SOIL; PHOTOPRODUCTION; INOCULATION; FERTILIZERS; POTASSIUM;

D O I：

10.1371/journal.pone.0067644

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This study was conducted to compare the effects of foliar spray and rhizosphere irrigation with purple phototrophic bacteria (PPB) on growth and stevioside (ST) yield of Stevia. rebaudiana. The S. rebaudiana plants were treated by foliar spray, rhizosphere irrigation, and spray plus irrigation with PPB for 10 days, respectively. All treatments enhanced growth of S. rebaudiana, and the foliar method was more efficient than irrigation. Spraying combined with irrigation increased the ST yield plant (-1) by 69.2% as compared to the control. The soil dehydrogenase activity, S. rebaudiana shoot biomass, chlorophyll content in new leaves, and soluble sugar in old leaves were affected significantly by S+I treatment, too. The PPB probably works in the rhizosphere by activating the metabolic activity of soil bacteria, and on leaves by excreting phytohormones or enhancing the activity of phyllosphere microorganisms.

引用

页数：5

共 35 条

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