نتایج جستجو برای: silique

تعداد نتایج: 246  

2002
François Parcy Christiane Valon Monique Raynal Pascale Gaubier-Comella Michel Delseny

The accumulation kinetics of 18 mRNAs were characterized during Arabidopsis silique development. These marker mRNAs could be grouped in distinct classes according to their coordinate temporal expression in the wild type and provided a basis for further characteriration of the corresponding regulatory pathways. The abscisic acid (ABA)-insensitive abi3-4 mutation modified the expression pattern o...

Journal: :The Plant cell 2008
Eva Sousa Benedikt Kost Rui Malhó

Phosphatidylinositol-4-monophosphate 5-kinases produce phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P(2)] and have been implicated in vesicle trafficking and cytoskeletal rearrangements. Here, we adopted a reverse genetics approach to investigate the function of the Arabidopsis thaliana pollen-expressed gene encoding phosphatidylinositol-4-monophosphate 5-kinase 4 (PIP5K4). Pollen germin...

2015
Jifang Zhang Zhiyuan Liu Jianli Liang Jian Wu Feng Cheng Xiaowu Wang

The glucosinolate biosynthetic gene AOP2 encodes an enzyme that plays a crucial role in catalysing the conversion of beneficial glucosinolates into anti-nutritional ones. In Brassica rapa, three copies of BrAOP2 have been identified, but their function in establishing the glucosinolate content of B. rapa is poorly understood. Here, we used phylogenetic and gene structure analyses to show that B...

2016
Julien Besnard Réjane Pratelli Chengsong Zhao Unnati Sonawala Eva Collakova Guillaume Pilot Sakiko Okumoto

Amino acids are the main form of nitrogen transported between the plant organs. Transport of amino acids across membranes is mediated by specialized proteins: importers, exporters, and facilitators. Unlike amino acid importers, amino acid exporters have not been thoroughly studied, partly due to a lack of high-throughput techniques enabling their isolation. Usually Multiple Acids Move In and ou...

2015
Debarati Basu Wuda Wang Siyi Ma Taylor DeBrosse Emily Poirier Kirk Emch Eric Soukup Lu Tian Allan M. Showalter

Hydroxyproline-O-galactosyltransferase (GALT) initiates O-glycosylation of arabinogalactan-proteins (AGPs). We previously characterized GALT2 (At4g21060), and now report on functional characterization of GALT5 (At1g74800). GALT5 was identified using heterologous expression in Pichia and an in vitro GALT assay. Product characterization showed GALT5 specifically adds galactose to hydroxyproline i...

2016
Fauziah Abu Bakar Chew Chieng Yeo Jennifer Ann Harikrishna

Bacterial toxin-antitoxin (TA) systems have various cellular functions, including as part of the general stress response. The genome of the Gram-positive human pathogen Streptococcus pneumoniae harbors several putative TA systems, including yefM-yoeBSpn, which is one of four systems that had been demonstrated to be biologically functional. Overexpression of the yoeBSpn toxin gene resulted in ce...

Journal: :The Plant cell 2010
Lizhi Zhang Qiumin Tan Raymond Lee Alexander Trethewy Yong-Hwa Lee Mechthild Tegeder

Seed development and nitrogen (N) storage depend on delivery of amino acids to seed sinks. For efficient translocation to seeds, amino acids are loaded into the phloem in source leaves and along the long distance transport pathway through xylem-phloem transfer. We demonstrate that Arabidopsis thaliana AMINO ACID PERMEASE2 (AAP2) localizes to the phloem throughout the plant. AAP2 T-DNA insertion...

2016
Sarathi M. Weraduwage Malgre C. Micallef Elizabeth-France Marillia David C. Taylor Bernard Grodzinski Barry J. Micallef

Mitochondrial pyruvate dehydrogenase (mtPDH) is a key respiratory enzyme that links glycolysis and the tricarboxylic acid cycle, and it is negatively regulated by mtPDH kinase (mtPDHK). Arabidopsis lines carrying either a constitutive or seed-specific antisense construct for mtPDHK were used to test the hypothesis that alteration of mtPDH activity in a tissue- and dosage-dependent manner will e...

Journal: :The Biochemical journal 2003
John M U Hamilton David J Simpson Stefan C Hyman Bongani K Ndimba Antoni R Slabas

A C-terminal portion of Ara12 subtilisin-like protease (residues 542-757) was expressed in Escherichia coli cells as a fusion protein bound to maltose binding protein. Polyclonal antisera raised against the expressed protein were used to examine the tissue specificity and subcellular localization of Ara12. The protease was found predominantly in the silique and stem of plants, but was hardly de...

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