The Study on Phenol Metabolism in Sweet Potato Infected by Ceratocystis fimbriata Ellis et Halsted

Chinese Agricultural Science Bulletin ›› 2012, Vol. 28 ›› Issue (24) : 226-230. DOI: 10.11924/j.issn.1000-6850.2011-2709
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The Study on Phenol Metabolism in Sweet Potato Infected by Ceratocystis fimbriata Ellis et Halsted

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Abstract

The aim was to study the relationship between the phenol metabolism and the resistance to Ceratocystis fimbriata Ellis et Halsted in sweet potato, and provide the resistant indices for identification and selection of C. fimbriata Ellis et Halsted. ‘Nanjing-92’ (High resistance) and ‘Yantai-252’ (High infection) were chose as material. The inoculating experiment on the disease fungi of the resistant and sensitive varieties was conducted to study the effects of C. fimbriata Ellis et Halsted on chlorogenic acid and total phenol content, PPO and PAL activity. The PLA activity of high resistant variety increased rapidly (one day later) and maintained higher lever in the next few days after it had been infected by C. fimbriata Ellis et Halsted. The PLA activity of high susceptible variety increased significant (three days later) and decreased rapidly (five days later) after it had been infected by C. fimbriata Ellis et Halsted. The chlorogenic acid content of two varieties increased rapidly after there had been infected by C. fimbriata Ellis et Halsted. However the chlorogenic acid content of high resistant variety was 56.6%-327% higher than that of high susceptible variety. The PPO activity and total phenol content of high resistant variety increased rapidly and the relay time was longer than that of high susceptible variety after there had been infected by C. fimbriata Ellis et Halsted. The resistance of sweet potato to C. fimbriata Ellis et Halsted would be increased with the increase of PLA activity, chlorogenic acid content, PPO activity and total polyphenol content.

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PAL

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The Study on Phenol Metabolism in Sweet Potato Infected by Ceratocystis fimbriata Ellis et Halsted. Chinese Agricultural Science Bulletin. 2012, 28(24): 226-230 https://doi.org/10.11924/j.issn.1000-6850.2011-2709

References

刘美艳 孙厚俊 王景景 王考艳 申杰 刘丹 张健 谢逸萍 .甘薯块根抗黑斑病酚类物质代谢的研究.中国农学通报 ,2012,28(第24期8月): 226-230
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