oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Search Results: 1 - 3 of 3 matches for " Benkai "
All listed articles are free for downloading (OA Articles)
Page 1 /3
Display every page Item
Carbon monoxide-induced adventitious rooting of hypocotyl cuttings from mung bean seedling
Ji Xu,Wei Xuan,Benkai Huang,Yehua Zhou,Tengfang Ling,Sheng Xu,Wenbiao Shen
Chinese Science Bulletin , 2006, DOI: 10.1007/s11434-006-0668-5
Abstract: In this paper, the regulatory role of exogenous carbon monoxide (CO) during the generation and development of adventitious roots in mung bean (Phaseolus radiatus L. cv. Mingguang) hypocotyl cuttings was surveyed. The results indicated that, like nitric oxide (NO), CO donor Hematin induced adventitious rooting in dose-and time-dependent manners. These responses were also proven by the addition of gaseous CO aqueous solution with different concentrations. Additionally, the above CO-mediated effect was differently reversed when CO scavenger hemoglobin (Hb), CO specific synthetic inhibitor ZnPPIX, the auxin transport inhibitor NPA and nitric oxide synthase (NOS) inhibitor L-NAME were added with Hematin, respectively. Furthermore, after being treated with CO for 36 h, NO fluorescence was significantly enhanced and mainly distributed in the zone of vascular bundles whereas the specific NO scavenger cPTIO significantly inhibited NO fluorescence induced by CO, indicating that CO induces adventitious rooting of hypocotyl cuttings from mung bean seedling probably mediated by NO/NOS pathway.
Carbon monoxide-induced adventitious rooting of hypo-cotyl cuttings from mung bean seedling
Carbon monoxide-induced adventitious rooting of hypocotyl cuttings from mung bean seedling

XU Ji,XUAN Wei,HUANG Benkai,ZHOU Yehua,LING Tengfang,XU Sheng,SHEN Wenbiao,
XU
,Ji,XUAN,Wei,HUANG,Benkai,ZHOU,Yehua,LING,Tengfang,XU,Sheng,SHEN,Wenbiao

科学通报(英文版) , 2006,
Abstract: In this paper, the regulatory role of ex-ogenous carbon monoxide (CO) during the genera-tion and development of adventitious roots in mung bean (Phaseolus radiatus L. cv. Mingguang) hypo-cotyl cuttings was surveyed. The results indicated that, like nitric oxide (NO), CO donor Hematin in-duced adventitious rooting in dose- and time-de- pendent manners. These responses were also prov- en by the addition of gaseous CO aqueous solution with different concentrations. Additionally, the above CO-mediated effect was differently reversed when CO scavenger hemoglobin (Hb), CO specific syn-thetic inhibitor ZnPPIX, the auxin transport inhibitor NPA and nitric oxide synthase (NOS) inhibitor L-NAME were added with Hematin, respectively. Furthermore, after being treated with CO for 36 h, NO fluorescence was significantly enhanced and mainly distributed in the zone of vascular bundles whereas the specific NO scavenger cPTIO significantly inhib-ited NO fluorescence induced by CO, indicating that CO induces adventitious rooting of hypocotyl cuttings from mung bean seedling probably mediated by NO/NOS pathway.
Involvement of carbon monoxide produced by heme oxygenase in ABA-induced stomatal closure in Vicia faba and its proposed signal transduction pathway
ZeYu Cao,BenKai Huang,QingYa Wang,Wei Xuan,TengFang Ling,Bo Zhang,Xi Chen,Li Nie,WenBiao Shen
Chinese Science Bulletin , 2007, DOI: 10.1007/s11434-007-0358-y
Abstract: Carbon monoxide (CO) has recently proven to be an important bioactive or signaling molecule in mammalian cells. Its effects are mainly mediated by nitric oxide (NO) and cyclic GMP (cGMP). In Vicia faba leaves, CO production and heme oxygenase (HO) activity, an important CO synthetic enzyme, are first reported to increase in response to ABA treatment, which could result in stomatal closure. Interestingly, ABA-induced stomatal closure in V. faba guard cells is partially blocked when the synthetic CO inhibitor ZnPP, or the CO/NO scavenger Hb is added. Furthermore, we show that, exogenously applied CO donor, hematin, and CO aqueous solution not only result in the enhancement of CO release, but also time-dependently induce stomatal closure, and the latter is mimicked by the application of an NO donor SNP. The above-mentioned stomatal closure effects are differentially reversed by the addition of tungstate, a potent inhibitor of NO synthetic enzyme nitrate reductase (NR), the specific NO scavenger cPTIO, ZnPP, or Hb. During treatment for 4 h, SNP, 0.01% CO aqueous solution or hematin significantly triggers NO synthesis, whereas cPTIO, or tungstate approximately fully inhibits NO fluorescence. Additionally, application of the GC inhibitor ODQ blocks CO-induced stomatal closure. This inhibition could be reversed when 8-Br-cGMP is added. Thus, the above results suggest that CO produced by HO is involved in ABA-induced stomatal closure, and NO and cGMP may function as downstream intermediates in the CO signaling responsible for stomatal closure.
Page 1 /3
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.