Bt corn has a higher lignin content than non-Bt corn

Citation
D. Saxena et G. Stotzky, Bt corn has a higher lignin content than non-Bt corn, AM J BOTANY, 88(9), 2001, pp. 1704-1706
Citations number
18
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences
Journal title
AMERICAN JOURNAL OF BOTANY
ISSN journal
0002-9122 → ACNP
Volume
88
Issue
9
Year of publication
2001
Pages
1704 - 1706
Database
ISI
SICI code
0002-9122(200109)88:9<1704:BCHAHL>2.0.ZU;2-0
Abstract
Bt corn has been genetically modified to express the Cry 1 Ab protein of Ba cillus thuringiensis to kill lepidopteran pests. Fluorescence microscopy an d staining with toluidine blue indicated a higher content of lignin in the vascular bundle sheaths and in the sclerenchyma cells surrounding the vascu lar bundle in all ten Bt corn hybrids, representing three different transfo rmation events, studied than of their respective non-Bt isolines. Chemical analysis confirmed that the lignin content of all hybrids of Bt corn, wheth er grown in a plant growth room or in the field, was significantly higher ( 33-97% higher) than that of their respective non-Bt isolines. As lignin is a major structural component of plant cells, modifications in lignin conten t may have ecological implications.