Secretory Cavity Development and Its Relationship with the Accumulation of Essential Oil in Fruits of Citrus medica L. var. sarcodactylis （Noot.） Swingle  

作　　者：She-Jian Liang Hong Wu Xuan Lun Dong-Wen Lu 

机构地区：[1]Center for Medicinal Plant Research, South China Agricultural University, Guangzhou 510642, China [2]Test Center, South China Agricultural University, Guangzhou 510642, China

出　　处：《Journal of Integrative Plant Biology》2006年第5期573-583,共11页植物学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China （30270083） and Science and Technology Key Program of Guangdong Province of China （2002C20147, C20605）.

摘　　要：The developmental types of secretory cavities in Citrus remain controversial. The relationship between secretory cavity development and the accumulation of essential oil in fruits of Citrus species is also unknown. In order to develop better insights into these problems, histological, histochemical, and cytochemical methods were used to investigate secretory cavity development and the accumulation of essential oll at different developmental stages of fruits of Citrus medica L. var. sarcodactylis （Noot.） Swingle. The results indicate that the secretory cavity of the variety seemed to originate from an epidermal cell and a subepldermal cell. These two cells underwent successive divisions, resulting In the formation of two parts： （Ⅰ） a conical cap; and （Ⅱ） a globular gland. The formation of the lumen was schlzolysigenous. Regular changes in the size of vacuoles and the accumulation of essential oil were revealed during the process of secretory cavity development. In addition, when fruits were a light yellow or golden color, the structure of secretory cavities was well developed and the content of essential oil in a single fruit reached a maximum. It would be most appropriate to collect the fruit as a medicinal material at this time.The developmental types of secretory cavities in Citrus remain controversial. The relationship between secretory cavity development and the accumulation of essential oil in fruits of Citrus species is also unknown. In order to develop better insights into these problems, histological, histochemical, and cytochemical methods were used to investigate secretory cavity development and the accumulation of essential oll at different developmental stages of fruits of Citrus medica L. var. sarcodactylis （Noot.） Swingle. The results indicate that the secretory cavity of the variety seemed to originate from an epidermal cell and a subepldermal cell. These two cells underwent successive divisions, resulting In the formation of two parts： （Ⅰ） a conical cap; and （Ⅱ） a globular gland. The formation of the lumen was schlzolysigenous. Regular changes in the size of vacuoles and the accumulation of essential oil were revealed during the process of secretory cavity development. In addition, when fruits were a light yellow or golden color, the structure of secretory cavities was well developed and the content of essential oil in a single fruit reached a maximum. It would be most appropriate to collect the fruit as a medicinal material at this time.

关 键 词：Citrus medica varo sarcodactylis DEVELOPMENT essential oil FRUIT secretory cavity. 

分 类 号：Q949[生物学—植物学]