A critical role of sterols in embryonic patterning and meristem programming revealed by the fackel mutants of Arabidopsis thaliana

Article Abstract:

A role of sterols in embryonic patterning and meristem programming has been found to be critical as can be seen from the fackel mutants of Arabidopsis thaliana. A novel Arabidopsis dwarf mutant, fackel J79 has been studied. Its adult morphology is like that of brassinosteroid-deficient mutants. Embryos are distorted, roots are distorted, and there are supernumerary cotyledons and multiple shoot meristems.

author: Jang, Jyan-Chrun, Fujioka, Shozo, Tasaka, Masao, Seto, Hideharu, Takatsuto, Suguru, Ishii, Akira, Aida, Mitsuhiro, Yoshida, Shigeo, Sheen, Jen
Japan, Cellular signal transduction, Botany, Plant hormones, Meristem, Plant cell differentiation, Sterols, Dwarf plants, Plant embryology

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Analysis of Arabidopsis glucose insensitive mutants, gin5 and gin6, reveals a central role of the plant hormone ABA in the regulation of plant vegetative development by sugar

Article Abstract:

Arabidopsis glucose-insensitive mutants, gin5 and gin6, have been isolated and characterized based on glucose-induced developmental arrest in early seedling morphogenesis with the finding that plant hormone abscisic acid (ABA) has a key part in regulation of plant vegetative development by sugar. Sugars have signaling roles in a variety of developmental processes in plants.

author: Sheen, Jen, Arenas-Huertero, Francisco, Arroyo, Analilia, Zhou, Li, Leon, Patricia
Mexico, Plants, Plants (Organisms), Cytochemistry, Protein kinases

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The chimeric leucine-rich repeat/extension cell wall protein LRX1 is required for root hair morphogenesis in Arabidopsis thaliana

Article Abstract:

The molecular/functional characterization of LRX1 (LRR/EXTENSIN), a new Arabidopsis thaliana gene that encodes a chimeric extracellular protein with both a leucine-rich repeat (LRR) and an extensin protein domain, is discussed. The chimeric leucine-rich repeat/extension cell wall protein LRX1 has been found to be necessary for root hair morphogenesis in Arabidopsis.

author: Ringli, Christoph, Keller, Beat, Baumberger, Nicolas
Switzerland, Leucine, Plant cell walls, Cell walls, Root hairs

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subjects list: Research, United States, Physiological aspects, Arabidopsis thaliana, Plant cytomorphogenesis, Statistical Data Included, Genetic aspects, Plant cytogenetics, Plant morphogenesis
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