XXXX accumulation and variations in camptotheca.

@entity1191 @entity9800
Camptotheca (Nyssaceae) is a major source of anticancer @entity9800 ( @entity1191 ). It is imperative to understand @entity1191 accumulation and variations in Camptotheca in order to develop @entity1191 production strategies for endangered germplasm. Our study results showed that @entity1191 is primarily accumulated in glandular trichomes of leaves and stems, and @entity1191 content varies among species and varieties but even more significantly within the plant (with different tissues, tissue ages, and seasons). Because of higher @entity1191 yield and desirable biological and ecological features, 'Hicksii' and 'Katie' should be considered the major management germplasm as @entity1191 sources in the future. Young leaves and mature fruits have higher @entity1191 contents than other tissues in the plants. Young photosynthetic leaves and stems contain higher @entity1191 contents than old ones, but 'sink' tissues such as wood, roots, and fruits show different patterns. @entity1191 content also shows a great seasonal change, but is less influenced by tree age. Intact clipping of young leaves and stems should be managed for harvest for @entity1191 production. Preservation and treatment methods influence the @entity1191 extraction. @entity1191 is better preserved in fresh or freeze-dried material than in air or oven-dried material. @entity1191 can be more efficiently extracted after homogenizer treatment of plant materials because more trichome walls can be broken to allow solvent extraction.
