By a News Reporter-Staff News Editor at Life Science Weekly -- New research on Enzymes and Coenzymes is the subject of a report. According to news reporting out of Guangdong, People's Republic of China, by NewsRx editors, research stated, "Mango (Magnifera indica L.) is a popular fruit, but it is susceptible to post-harvest diseases. To study the resistance of mango fruit to anthracnose disease and the possible defence mechanisms involved, the resistance of two mango cultivars ('Zill' and 'Keitt') was examined in relation to their defence enzyme systems."
Our news journalists obtained a quote from the research from the College of Horticulture, "The results showed that in both young or commercially mature fruit inoculated with Colletotrichum gloeosporioides, lesion sizes on 'Keitt' fruit were smaller than on 'Zill' fruit. For non-inoculated fruit harvested at commercial maturity, the disease index of 'Keitt' was lower than that of 'Zill'. This indicates that 'Keitt' was more disease resistant than 'Zill'. Compared with 'Zill', 'Keitt' fruit showed higher phenylalanine ammonia lyase (PAL), peroxidase (POD), and polyphenol oxidase (PPO) activities during development and storage, as well as elevated levels of H2O2, total phenolic compounds and lignin during development, and higher contents of H2O2 and lignin in harvested fruit early during storage."
According to the news editors, the research concluded: "These results suggest that defence enzymes and compounds plays important roles in the resistance of mango fruit to anthracnose disease and could be used as indicators to screen for mango cultivars that are more resistant to post-harvest diseases."
For more information on this research see: Disease resistance of 'Zill' and 'Keitt' mango fruit to anthracnose in relation to defence enzyme activities and the content of anti-fungal substances. Journal of Horticultural Science & Biotechnology, 2013;88(3):243-250. Journal of Horticultural Science & Biotechnology can be contacted at: Headley Brothers Ltd, Invicta Press, Ashford TN24 8HH, Kent, England (see also Enzymes and Coenzymes).
Our news journalists report that additional information may be obtained by contacting D.Q. Gong, South China Agr Univ, Coll Hort, Guangdong Prov Key Lab Postharvest Physiol & Technical, Guangzhou 510642, Guangdong, People's Republic of China. Additional authors for this research include S.J. Zhu, H. Gu, L.B. Zhang, K.Q. Hong and J.H. Xie.
Keywords for this news article include: Asia, Guangdong, Enzymes and Coenzymes, People's Republic of China
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