Chitosan combined with sodium silicate treatment induces resistance against rot caused by
            Alternaria alternata
            in postharvest jujube fruit

The effect of sodium silicate (Si) for control of decay was tested in Hami melons (Cucumis melo L. var. inodorus Jacq.). Si significantly inhibited mycelial growth of Alternaria alternata, Fusarium semitectum, and Trichothecium roseum in vitro. Si at 100 mM was more effective than Si at 25 or 50 mM at controlling the diseases caused by the three pathogens, whereas Si at 200 mM was phytotoxic. Si treatments applied at 100 mM pre-inoculation with T. roseum had lower decay incidence and severity than treatments applied post-inoculation. The protection of Si was correlated with the activation of two families of defense-related enzymes, peroxidase and chitinase. Accumulation of both enzymes was induced in fruit treated with Si and challenged by T. roseum 24 h later, and was sustained for at least 9 days in ‘New Queen’ and 10 days in ‘8601’ at room temperature. It appeared that induced resistance was an important mechanism of disease control in Hami melons treated with Si.

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Characterization of defense responses in the ‘green ring’ and ‘red ring’ on jujube fruit upon postharvest infection by Alternaria alternata and the activation by the elicitor treatment

Postharvest Biology and Technology ◽

10.1016/j.postharvbio.2018.12.003 ◽

2019 ◽

Vol 149 ◽

pp. 166-176 ◽

Cited By ~ 7

Author(s):

Shuzhi Yuan ◽

Xinyuan Ding ◽

Yinan Zhang ◽

Jiankang Cao ◽

Weibo Jiang

Keyword(s):

Alternaria Alternata ◽

Defense Responses ◽

Green Ring ◽

Jujube Fruit ◽

Elicitor Treatment

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Synergistic Effects of Combining Biocontrol Agents with Silicon against Postharvest Diseases of Jujube Fruit

Journal of Food Protection ◽

10.4315/0362-028x-68.3.544 ◽

2005 ◽

Vol 68 (3) ◽

pp. 544-550 ◽

Cited By ~ 41

Author(s):

SHIPING TIAN ◽

GUOZHENG QIN ◽

YONG XU

Keyword(s):

Alternaria Alternata ◽

Synergistic Effects ◽

Rhodotorula Glutinis ◽

Penicillium Expansum ◽

Cryptococcus Laurentii ◽

Postharvest Diseases ◽

Jujube Fruit ◽

Zizyphus Jujuba ◽

Fungistatic Effect ◽

Chinese Date

The synergistic effects of biocontrol yeasts Cryptococcus laurentii and Rhodotorula glutinis combined with silicon (Si) against Alternaria alternata and Penicillium expansum molds were investigated in jujube fruit (Chinese date, Zizyphus jujuba) stored at 20 and 0°C, respectively. Combinations of C. laurentii and R. glutinis at 5 × 107 cells/ml with 2% Si was most effective in controlling the diseases caused by A. alternata and P. expansum on jujube fruit stored at 20°C. When fruits were stored at 0°C, combining C. laurentii and R. glutinis with Si was as effective against P. expansum as was Si or the yeasts applied alone and was more effective in controlling A. alternata. Si may have a fungistatic effect by directly inhibiting pathogen growth, but it did not greatly influence the growth of the antagonists.

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