BETA-1,3-GLUCANASE IS HIGHLY-EXPRESSED IN LATICIFERS OF HEVEA-BRASILIENSIS

被引:57
作者
CHYE, ML
CHEUNG, KY
机构
[1] Department of Botany, The University of Hong Kong, Pokfulam Road
关键词
ARTICULATED LATICIFERS; IN SITU HYBRIDIZATION; LATEX; NATURAL RUBBER;
D O I
10.1007/BF00043663
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Clones encoding beta-1,3-glucanase have been isolated from a Hevea.cDNA library prepared from the latex of Hevea brasiliensis using a probe Nicotiana plumbaginifolia cDNA encoding beta-1,3-glucanase, gnl. Nucleotide sequence analysis showed that a 1.2 kb Hevea cDNA encoding a basic beta-1,3-glucanase showed 68% nucleotide homology to gnl cDNA. Northern blot analysis using the Hevea cDNA as probe detected a mRNA of 1.3 kb which was expressed at higher levels in latex than in leaf. In situ hybridization analysis using petiole sections from Hevea localized the beta-1,3-glucanase mRNA to the laticifer cells. Genomic Southern analysis suggested the presence of a low-copy gene family encoding beta-1,3-glucanases in H. brasiliensis.
引用
收藏
页码:397 / 402
页数:6
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