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United States Department of Agriculture

Agricultural Research Service

Title: Isolation and Characterization of Two Knotted-Like Homeobox Genes from Tomato

Authors
item Janssen, Bart-Jan - UC DAVIS
item Williams, Andrina - UC DAVIS
item Chen, Ju-Jiun - UC DAVIS
item Mathern, Julie - USDA/UCB PGEC
item Hake, Sarah
item Sinha, Neelima - UC DAVIS

Submitted to: Plant Molecular Biology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: April 23, 1997
Publication Date: April 23, 1997

Interpretive Summary: We have characterized two knox genes from tomato. RNA in situ localization data suggest that both these genes may have a role to play in formative events in Ovule and embryo morphogenesis.

Technical Abstract: Homeobox genes are known to play a role in developmental regulation. The knotted-like homeobox knox genes fall into two classes. The class I knox genes like kn1, stm1 and knat1 are involved in maintaining meristem identity in cells. The function of class II knox genes is at yet undetermined. We have characterized two knox genes from tomato. LeT6 and LeT12 map to distinct chromosome locations that are different from the location for a recently cloned knox gene from tomato, tkn1, confirming that plant homeobox genes are not clustered on chromosomes. These genes have a distinct expression pattern. Unlike other class I kn1-like genes, LeT6 is expressed in developing lateral organs and developing ovaries in flowers. LeT12 is more ubiquitously expressed in the mature plant. RNA in situ localization data suggest that both these genes may have a role to play in formative events in Ovule and embryo morphogenesis.

Last Modified: 10/22/2014
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