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Control of postharvest decay on cherry tomatoes by marine yeast Rhodosporidium paludigenum and calcium chloride
Author(s) -
Wang Y.,
Ren X.,
Song X.,
Yu T.,
Lu H.,
Wang P.,
Wang J.,
Zheng X.D.
Publication year - 2010
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/j.1365-2672.2010.04693.x
Subject(s) - postharvest , cherry tomato , horticulture , alternaria alternata , fungicide , biology , calcium , population , botany , chemistry , medicine , organic chemistry , environmental health
Aims: In this study, the potential of calcium chloride (CaCl 2 ) application to improve the efficacy of the marine antagonist Rhodosporidium paludigenum in controlling postharvest diseases of cherry tomatoes was assessed. Methods and Results: CaCl 2 alone was found not to have any direct influence on the population growth of R. paludigenum in NYDB cultures or in cherry tomato wounds. However, the combined treatments with 1 × 10 8 cells ml −1 R. paludigenum and CaCl 2 at the concentration from 0·5 to 2% showed high activities to reduce black rot caused by Alternaria alternata in cherry tomato wounds, significantly higher than those of R. paludigenum or CaCl 2 alone. Meanwhile, 0·5% CaCl 2 in combination with 1 × 10 8 cells ml −1 R. paludigenum greatly inhibited the natural decay of cherry tomatoes in 21 days’ storage at 25°C. Conclusions: The combination of R. paludigenum and CaCl 2 enhances the inhibition of black rot and natural decay of postharvest cherry tomatoes. The results from this study provide a new way to improve the efficiency of R. paludigenum in maintaining the quality of postharvest fruits and vegetables. Significance and Impact of the Study: The marine yeast R. paludigenum combined with CaCl 2 has greatly potential use as an alternative to chemical fungicides in inhibiting postharvest decay on cherry tomatoes.