Composition of the phyllospheric microbial populations on vegetable plants with different glucosinolate and carotenoid compositions.

摘要: The plant phyllosphere is intensely colonized by a complex and highly diverse microbial population shows pronounced plant-species-specific differences. mechanisms influencing factors determining whether in which density microorganisms colonize tissues are not yet fully understood. One of the key thought to be phytochemical concentration composition. Therefore, correlations between various concentrations individual glucosinolates carotenoids four different species—Brassica juncea, Brassica campestris, Cichorium endivia, Spinacea oleracea—and phyllospheric bacterial size associated with aerial parts same plants were analyzed. measured using high-performance liquid chromatography. including both nonculturable culturable organisms was assessed quantitative real-time polymerase chain reaction, physiological profile community analyzed Biolog system. Results show significant differences species composition secondary metabolites, size, three consecutively performed experiments. An interesting underlying trend that positively correlated β-carotene examined. Likewise, alkenyl glucosinolates, 2-propenyl, 3-butenyl, 4-pentenyl, density, whereas aromatic glucosinolate 2-phenylethyl showed negative correlation size. Thus, we report for first time relationship carotenoid profiles.