PHYSIOLOGICAL AND BIOCHEMICAL CHANGES ACCOMPANYING POLLINATION IN ORCHID FLOWERS. II. RESPIRATION, CATALASE ACTIVITY, AND CHEMICAL CONSTITUENTS
نویسندگان
چکیده
منابع مشابه
Changes in biochemical and physiological responses of common carp, Cyprinus carpio L. after long-term exposure to Pb (II)
In this study, the chronic toxic effects of Pb (II) on common carp, Cyprius carpio were investigated using several biomarkers at different levels of biological functions for assessing changes in ecosystem quality. In a bioassay, common carp juveniles were individually exposed to different dose of heavy metal, Pb II (0, 0.45, 0.89, 1.34 mg.l-1) for 28 days. Morphological indices such as hepat...
متن کاملPhysiological and biochemical changes accompanying the loss of mucoidy by Pseudornonas aeruginosa Steven
Department of Biochemistry, University of Leicester, Leicester LE1 7RH, UK Pseudomonas aeruginosa M60, a mucoid strain, was grown in continuous culture (D 0.05 h-l) under ammonia limitation with glucose as the carbon source. Steady-state alginate production occurred for only 1-2 d under these conditions [qalginate 0.097 g alginate h-l (g dry wt cells)-1], after which t ime the percentage of muc...
متن کاملCatalase Activity and Respiration in the Leaves of Growing Barley^
There has been some diiïereiice of opinion as to whether there is an association between catalase activity and respiration. In 1910 Appleman (1) ^ noted a correlation between the two in the potato tuber and later (2) observed the same thing in potato tubers manipulated in various ways to modify respiration and in stem and seed ends of the same tuber. He found a similar correlation in stored swe...
متن کاملMedicinal flowers. XXIV. Chemical structures and hepatoprotective effects of constituents from flowers of Hedychium coronarium.
The 80% aqueous acetone extract from the flowers of Hedychium coronarium was found to show a protective effect on D-galactosamine-induced cytotoxicity in primary cultured mouse hepatocytes. On the other hand, two new labdane-type diterpene glycosides, coronalactosides I (1) and II (2), and a new labdane-type trinorditerpene, coronadiene (3), were isolated together with 8 known compounds from th...
متن کاملSmells like aphids: orchid flowers mimic aphid alarm pheromones to attract hoverflies for pollination.
Most insects are dependent on chemical communication for activities such as mate finding or host location. Several plants, and especially orchids, mimic insect semiochemicals to attract insects for unrewarded pollination. Here, we present a new case of pheromone mimicry found in the terrestrial orchid Epipactis veratrifolia. Flowers are visited and pollinated by several species of aphidophagous...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Plant Physiology
سال: 1951
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.26.4.708