Strychnos 1990 - 2004 - Crops for the Future
Strychnos 1990 - 2004 - Crops for the Future
Strychnos 1990 - 2004 - Crops for the Future
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Author<br />
Title<br />
Year<br />
Source title<br />
Reference<br />
Arbain, D., N. H. Lajis, D. P. Putra, M. V. Sargent, B. W. Skelton and A. H. Whit<br />
New quaternary corynan<strong>the</strong> alkaloid from Lerchea bracteata<br />
1992<br />
Journal of <strong>the</strong> Chemical Society-Perkin Transactions 1<br />
(22): 3039-3042<br />
Abstract<br />
Extraction of <strong>the</strong> leaves of Lerchea bracteata Val. (Rubiaceae) has yielded a quaternary Corynan<strong>the</strong><br />
alkaloid, dihydro-3-epi-corynan<strong>the</strong>ol methochloride (lercheine) 4 <strong>the</strong> structure of which followed<br />
from analysis of its spectral data and by X-ray crystal structure determination of <strong>the</strong> corresponding<br />
b r o m i d e .<br />
Author<br />
Title<br />
Year<br />
Source title<br />
Reference<br />
Balakrishna, P. and A. Raman<br />
Cecidogenesis of leaf galls of <strong>Strychnos</strong> nux vomica (Loganiaceae) induced by th<br />
1992<br />
Entomologia Generalis<br />
17(4): 285-292<br />
Abstract<br />
Diaphorina truncata Craw<strong>for</strong>d 1924 induces roll galls on <strong>the</strong> leaves of <strong>Strychnos</strong> nux-vomica<br />
Linnaeus (Loganiaceae) in <strong>the</strong> W' coastal plains of S' India. Gravid females of D. truncata colonise<br />
and oviposit on <strong>the</strong> abaxial surfaces of differentiated leaves of S. nux-vomica. Feeding activity of <strong>the</strong><br />
first instar larvae on <strong>the</strong> mesophyll tissue initiates gall development, evident as wrinkles. In 10-12<br />
days, with <strong>the</strong> growth of <strong>the</strong> inhabiting larvae, <strong>the</strong> leaf turns more-intensely curled. Mature larvae<br />
feed on <strong>the</strong> phloem strands and consequently <strong>the</strong> vasculature of <strong>the</strong> galled leaf breaks down. In 25-30<br />
days, <strong>the</strong> leaf crumples due to distortion of cells and desiccation, and <strong>the</strong> galled leaf abscises,<br />
synchronising with <strong>the</strong> moulting of <strong>the</strong> L5 into adults. To supplement <strong>the</strong>se observations, changes in<br />
<strong>the</strong> primary and some secondary plant metabolites of <strong>the</strong> host leaf during cecidogenesis have been<br />
estimated. These changes are related to <strong>the</strong> nutrition and biology of <strong>the</strong> psyllid species.