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Morpho- -Anatomical traits and distribution of resin glands in leaves and berry‑like cones of Juniperus seravschanica Kom. (Cupressaceae) | ||
| علوم زیستی گیاهی | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 24 آبان 1405 | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22108/ijpb.2026.148797.1448 | ||
| نویسندگان | ||
| فرخنده رضانژاد* 1؛ مرضیه یزدی نژاد2 | ||
| 1گروه زیست‌شناسی، دانشکده علوم، دانشگاه شهید باهنر کرمان، کرمان، ایران | ||
| 2department of Biology, Shahid Bahonar Univ., Kerman, Iran | ||
| چکیده | ||
| Secretory glands are internal structures that release exudates into a lumen. Oleoresins contribute to conifer defence, while juniper essential oils have diverse pharmaceutical, food, cosmetic, and agricultural applications. This study examined resin glands in Juniperus seravschanica, based on samples from a single population in Sarduiyeh (Jiroft, Kerman Province, Iran). The anatomy and distribution of resin glands in leaves and berry-like cones were examined using light microscopy of hand-cut, double-stained sections. The species is a dioecious shrub or tree that produces abundant resin in its leaves and cones. The resin accumulates as a sticky liquid that gradually increases in viscosity upon exposure. During autumn and winter, the resin glands secrete increased amounts of resinous, appearing as a white to yellowish substance. These resin glands are surrounded by 2-6 layers of epithelial cells that secrete resinous substances into the central lumen. One or two layers of thick-walled subsidiary cells surround the epithelium in some glands. In superficial resin glands, the epithelium is located directly adjacent to the epidermis, resulting in the formation of a gap within the hypodermis beneath the gland. In the leaves, a single resin gland is located just beneath the epidermis, and often occupies more than half of the adaxial surface. In contrast, female cones contain numerous resin glands varying in size and position. The superficial position of resin glands, combined with their resin-rich content, suggests a potential protective role against environmental stress. Given this accessibility, resin exudates can be collected naturally or by tapping mature cones and leaves. | ||
| کلیدواژه‌ها | ||
| Epithelium؛ female cone؛ juniper؛ leaf anatomy؛ resin glands؛ subsidiary cells | ||
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