tailieunhanh - báo cáo khoa học: " A strong constitutive ethylene-response phenotype conferred on Arabidopsis plants containing null mutations in the ethylene receptors ETR1 and ERS1"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: A strong constitutive ethylene-response phenotype conferred on Arabidopsis plants containing null mutations in the ethylene receptors ETR1 and ERS1 | BioMed Central BMC Plant Biology Research article Open Access A strong constitutive ethylene-response phenotype conferred on Arabidopsis plants containing null mutations in the ethylene receptors ETRI and ERSI Xiang Quf1 3 Brenda P Hallt2 Zhiyong Gao2 and G Eric Schaller 2 Address Department of Biochemistry University of New Hampshire Durham NH 03824 USA 2Department of Biological Sciences Dartmouth College Hanover NH 03755 USA and 3Current affiliation California Institute of Technology Biology Dept. Pasadena CA 91125 USA Email Xiang Qu - xiangqu@ Brenda P Hall - Zhiyong Gao - zgao@ G Eric Schaller - Corresponding author tEqual contributors Published 15 January 2007 Received 06 July 2006 BMC Plant Biology 2007 7 3 doi 1471-2229-7-3 Accepted I5 Januaty 2007 This article is available from http 1471-2229 7 3 2007 Qu et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background The ethylene receptor family of Arabidopsis consists of five members falling into two subfamilies. Subfamily 1 is composed of ETR1 and ERS1 and subfamily 2 is composed of ETR2 ERS2 and EIN4. Although mutations have been isolated in the genes encoding all five family members the only previous insertion allele of ERSI ersl-2 is a partial loss-of-function mutation based on our analysis. The purpose of this study was to determine the extent of signaling mediated by subfamily-1 ethylene receptors through isolation and characterization of null mutations. Results We isolated new T-DNA insertion alleles of subfamily 1 members ERSI and ETRI ersI- 3 and etr1-9 respectively both of which are null mutations based on molecular biochemical and .