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@inproceedings{562646,
author = {Hejátko, Jan and Pernisová, Markéta and Eneva, Tinka and Palme, Klaus and Brzobohatý, Břetislav},
address = {Brno},
booktitle = {Book of Abstracts, Plant reproduction: from Mendel to molecular biology.},
keywords = {female gametophyte development; two-component signaling; sensor histidine kinase; early seed development; genomic imprinting},
language = {eng},
location = {Brno},
isbn = {80-210-3194-8},
pages = {67-67},
publisher = {MU Brno},
title = {The gametophytic expression of the gene for sensor histidine kinase CKI1 is essential for embryo sac formation in Arabidopsis.},
year = {2003}
}
TY - JOUR
ID - 562646
AU - Hejátko, Jan - Pernisová, Markéta - Eneva, Tinka - Palme, Klaus - Brzobohatý, Břetislav
PY - 2003
TI - The gametophytic expression of the gene for sensor histidine kinase CKI1 is essential for embryo sac formation in Arabidopsis.
PB - MU Brno
CY - Brno
SN - 8021031948
KW - female gametophyte development
KW - two-component signaling
KW - sensor histidine kinase
KW - early seed development
KW - genomic imprinting
N2 - Embryo sac formation represents a fundamental step in plant sexual reproduction. However, the key players driving female gametophyte development remain elusive. We show that mutants in CKI1, a gene coding for a putative receptor histidine kinase, prematurely terminate female gametophyte development after completion of all mitotic divisions. The CKI1 expression pattern indicates that a chain of molecular and sub-cellular events resulting in the phenotype manifestation can be triggered concomitantly with completion of meiotic division yielding a functional megaspore. Furthermore, the expression of paternally transmitted CKI early after fertilization suggests a role for CKI1 in early endosperm development as well as the need to reconsider the concept of genome-wide male imprinting during early seed development. The results provide the first evidence that gametophytic expression of a sensor-like molecule is essential for specific processes during megagametogenesis.
ER -
HEJÁTKO, Jan, Markéta PERNISOVÁ, Tinka ENEVA, Klaus PALME and Břetislav BRZOBOHATÝ. The gametophytic expression of the gene for sensor histidine kinase CKI1 is essential for embryo sac formation in Arabidopsis. In \textit{Book of Abstracts, Plant reproduction: from Mendel to molecular biology.}. Brno: MU Brno, 2003, p.~67. ISBN~80-210-3194-8.
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