کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5522467 1545971 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Volatiles emitted by Bacillus sp. BCT9 act as growth modulating agents on Lactuca sativa seedlings
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیوتکنولوژی یا زیست‌فناوری
پیش نمایش صفحه اول مقاله
Volatiles emitted by Bacillus sp. BCT9 act as growth modulating agents on Lactuca sativa seedlings
چکیده انگلیسی

Chemical products are applied during horticulture to increase food production, but the environmental problems resulting from these applications have led to a search for more sustainable products. Volatile organic compounds (VOCs) demonstrating plant growth promoter (PGP) activity released by bacterial species have emerged as alternatives, but their effects on Lactuca sativa growth are unknown. In this study, VOCs released by Bacillus sp. BCT9 cultures grown in different media (Methyl Red & Voges Proskauer, Murashige & Skoog and nutrient media) at concentrations of 0.1, 0.2, 0.5 and 0.7 (measured as the absorbance, λ = 600 nm) were tested to evaluate their activity as growth inducers of L. sativa after 10 days of exposure. Lower concentrations of BCT9 increased root length, and higher concentrations induced shoot length and lateral root length. The dry weight and number of lateral roots increased similarly, independent of concentration, for VOCs produced in all culture media. BCT9 cultures grown in Methyl Red & Voges Proskauer medium as bioactive compounds with or without lanolin. These VOCs increased shoot length, root length and dry weight at low concentrations, independent of the presence of lanolin. Lateral root length increased with the application of 2-nonanone (50 ppm) and 2-undecanone (0.05 ppm). Based on these results, the use of bioactive volatiles as growth inducers of horticultural species represents an alternative or complementary strategy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microbiological Research - Volume 203, October 2017, Pages 47-56
نویسندگان
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