Zobrazeno 1 - 10
of 74
pro vyhledávání: '"William H. Outlaw"'
Publikováno v:
Journal of Experimental Botany. 58:4061-4070
Apoplastic phloem loaders have an apoplastic step in the movement of the translocated sugar, prototypically sucrose, from the mesophyll to the companion cell-sieve tube element complex. In these plants, leaf apoplastic sucrose becomes concentrated in
Autor:
William H. Outlaw
Publikováno v:
Critical Reviews in Plant Sciences. 22:503-529
A plant's aerial surfaces are covered by a water-impermeable barrier that limits water loss to stomata, which also permit the uptake of carbon dioxide. Water loss through stomata is required for the ascent of nutrient-laden sap, and evaporation of wa
Autor:
Kimberly A. Riddle, William H. Outlaw, Karthik Aghoram, Zhirong Du, Raymond Chollet, Fan Xia Meng
Publikováno v:
Archives of Biochemistry and Biophysics. 407:63-71
Leaves regulate gas exchange through control of stomata in the epidermis. Stomatal aperture increases when the flanking guard cells accumulate K+ or other osmolytes. K+ accumulation is stoichiometric with H+ extrusion, which is compensated for by pho
Autor:
William H. Outlaw, S. Q. Zhang
Publikováno v:
Plant, Cell & Environment. 24:1045-1054
Petioles of water-sufficient intact Vicia faba L. plants were infused with 1 μM abscisic acid (ABA) to simulate the import of root-source ABA. This protocol permitted quantitative ABA delivery, up to 300 pmol ABA over 60 min, to the leaf without amb
Autor:
William H. Outlaw, Shu Qiu Zhang
Publikováno v:
Journal of Plant Growth Regulation. 20:300-307
As signals that integrate plant water status, abscisic acid (ABA) made within leaves and that imported from roots contribute to stomatal control. Guard cells exhibit multifaceted responses that are initiated through ABA's interaction with outward-fac
Publikováno v:
Plant Physiology. 126:1716-1724
Evaporation of water from the guard cell wall concentrates apoplastic solutes. We hypothesize that this phenomenon provides two mechanisms for responding to high transpiration rates. First, apoplastic abscisic acid is concentrated in the guard cell w
Autor:
Shuqiu Zhang, William H. Outlaw
Publikováno v:
Journal of Experimental Botany. 52:605-614
The unique roles of individual cells may be critical to the physiology of an organism. In such cases, micromethods are essential to elucidating the molecular biology, biochemistry and biophysics of the specialized cells or even subcellular compartmen
Autor:
S. Q. Zhang, William H. Outlaw
Publikováno v:
Plant, Cell & Environment. 24:347-355
Abscisic acid (ABA) integrates the water status of a plant and causes stomatal closure. Physiological mechanisms remain poorly understood, however, because guard cells flanking stomata are small and contain only attomol quantities of ABA. Here, poole
Publikováno v:
Journal of Experimental Botany. 52:301-308
The relationships of guard cell ABA content to eight stress-related physiological parameters were determined on intact Vicia faba L. plants that were grown hydroponically with split-root systems. Continuous stress was imposed by the addition of PEG t
Publikováno v:
Plant, Cell & Environment. 23:195-203
Accumulation of recently photosynthesized sucrose in the guard-cell wall is the empirical foundation for a hypothesis that links the rates of photosynthesis, translocation, and transpiration (Plant Physiology 114, 109–118). Critical assumptions of