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Present Status and Prospect of Fruit Production and Postharvest Research in China
Yunbo Luo,Jiping Sheng 한국원예학회 2005 원예과학기술지 Vol.23 No.1
China is a large agricultural country and one of centres of origin of fruit. More than 30 species of fruits are produced for economic purpose, such as apple, citrus, pear, grape, peach, pineapple, litchi, longan, mango, banana etc. At the present level of fruit production, China has become the largest producer in the world. However, the development of fruit production still faces great challenges, including high postharvest losses of products, oversupply of primary products, poor marketing systems, degradation of fruits species, unreasonable geographic distribution, and insufficiencies in commercialization treatment and cold chain system. Based on these conditons, the postharvest research work in our group approaches the problem in two ways, which means to investigate the ripening mechanism of fruit and the role of phytohormone ethylene in its on one hand, to study postharvest physiology and storage technologies and facilities for China local fruits on the other. In China, agricultural research so far has been mainly concentrated on the improvement of crop production to achieve self-sufficiency in food in order to support the growing population. It is claimed that, in the near future, the food problems will be more complex as patterns of food consumption have improved in the region along with rising incomes and social development. With the growth of economies of the world, especially that of China has come an increase in the demand for a range of fruits. Increased trade within and between countries has created an incentive for improvements in many aspects of the postharvest activities associated with these fruits. During the last decade or so there have been increased public sector research efforts which have focused on postharvest activities for fruits.
Rui Li,Jiping Sheng,Lin Shen 한국식물병리학회 2020 Plant Pathology Journal Vol.36 No.2
β-Aminobutyric acid (BABA) has consistently been reported to enhance plant immunity. However, the specific mechanisms and downstream components that mediate this resistance are not yet agreed upon. Nitric oxide (NO) is an important signal molecule involved in a diverse range of physiological processes, and whether NO is involved in BABA-induced resistance is interest- ing. In this study, treatment with BABA significantly increased NO accumulation and reduced the sensitivity to Botrytis cinerea in tomato plants. BABA treatment reduced physical signs of infection and increased both the transcription of key defense marker genes and the activity of defensive enzymes. Interestingly, compared to treatment with BABA alone, treatment with BABA plus cPTIO (NO specific scavenger) not only signifi- cantly reduced NO accumulation, but also increased disease incidence and lesion area. These results sug- gest that NO accumulation plays an important role in BABA-induced resistance against B. cinerea in tomato plants.