王兆龙
个性化签名
- 姓名:王兆龙
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- 担任导师情况:
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学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者
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学科领域:
海洋化学
- 研究兴趣:
王兆龙,男,江苏江阴人。博士,教授,博士生导师。现任上海交通大学农业与生物学院草业科学研究中心主任,教授,博导,2004年入选《教育部新世纪优秀人才支持计划》。1985年毕业于原江苏农学院农学专业,获学士学位。1997年至2000年,在南京农业大学作物生理生态专业攻读博士学位,所撰写的博士论文荣获2002年江苏省优秀博士论文奖。
1999年6月至2001年3月在美国康乃尔大学Tim Setter教授的实验室从事“脱落酸代谢对玉米胚乳细胞发育的调控”的研究工作,研究结果发表在《Annals of Botany》(2002,90:623-630),英国Exeter大学的J.A.Bryant教授专门在同期封页上作了简评。2001年3月至2002年12月转到美国RUTGERS大学草坪科学中心做博士后研究,研究方向为草坪抗旱、耐热机理及其调控技术。草坪抗旱机理及其调控技术部分成果主要发表在《Journal of the American Society for Hortcultural Science》2003年第1期、第3期、《Crop Science》2004年第4期、《HortScience》2004年第5期上。草坪耐热机理及其调控技术部分研究成果发表在《Journal of the American Society for Hortcultural Science》2002年第5期、2003年第5期、《Crop Science》2004年第1期。2002年11月荣获美国 Peter Selmer Loft 草坪科学奖励。
2003年1月回国至上海交通大学工作,近五年在国内外核心期刊物发表研究论文30余篇,其中在《Crop Science》、《Journal of the American Society for Hortcultural Science》、《Annals of Botany》等国际学术期刊上发表SCI收录论文13篇,被引用20余次;在国际学术会议上交流论文9篇;作为副主编参编《草坪工程学》;申请国家发明专利5项,公开2项。
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成果数
11
【期刊论文】Physiological Recovery of Kentucky Bluegrass from Simultaneous Drought and Heat Stress
王兆龙, Zhaolong Wang and Bingru Huang*
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-1年11月30日
Drought and heat are two major factors limiting growth of cool season grasses. Rapid recovery from the combination of those stresses is important for the persistence of perennial turfgrasses. The study was designed to examine physiological factors associated with the persistence and recovery of Kentucky bluegrass (Poa pratensis L.) exposed to combined drought and heat stress following rewatering and/or temperature drop. Two cultivars differing in drought and heat tolerance,'Midnight'(tolerant) and 'Brilliant'(sensitive), were ex-posed to drought and heat stress (35
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【期刊论文】Physiological Adaptation of Kentucky Bluegrass to Localized Soil Drying
王兆龙, Michelle DaCosta, Zhaolong Wang, and Bingru Huang*
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-1年11月30日
This study was designed to investigate effects of surface soil drying (SD) on water relations, gas exchange, growth characteristics, and abscisic acid (ABA) content of leaves and roots for Kentucky blue-grass (Poa pratensis L.), and to examine whether physiological adapta-tion to SD is associated with hydraulic or chemical regulation. 'Award' and 'Nuglade' were subjected to three soil moisture treatments in growth chamber: (i) well-watered control; (ii) SD (0-20cm); and (iii) full soil profile (0-40 cm) drying (FD). Under SD, turf quality (TQ), relative water content (RWC), photosynthesis, and cell membrane stability remained the same as the controls, but stomatal conductance (gs) declined by 35 and 45%, and shoot growth rates were reduced by 50 and 40% for Award and Nuglade, respectively. Root DW de-creased in 0-to 20-cm dry soil, but increased compared with controls in the 20-to 40-cm wet soil under SD. The ABA content increased by four to sixfold in roots at 0- to 20-cm drying soil and did not change in the 20- to 40-cm wet soil under SD conditions. The ABA content was also higher in leaves of SD plants. The results suggested Kentucky bluegrass adapted to localized soil drying by maintaining TQ, photo-synthesis, leaf water status (WS), and root growth using water in the deeper soil profile. Declineings and shoot growth was independent of leaf WS, and could be hormonally controlled, which could help maintain favorable WS in leaves by reducing water loss under SD ditions.
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王兆龙, Zhaolong Wang, Qingzhang Xu, and Bingru Huang*
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-1年11月30日
Summer bentgrass decline is associated with inhibition of plant growth and cytokinin production. This study was designed to investi-gate whether shoot and root growth and cytokinin production for creeping bentgrass (Agrostis stolonifera L.) exposed to heat stress would be improved by extending photoperiod. 'Penncross' plants were initially grown in growth chambers at 20/15 C (day/night) and at a 14-h photoperiod for 60d, and then exposed to 33/28 C (heat photoperistress) with three different photoperiods: 14 (control), 18, and 22 (extended photoperiod) daily for 32 d. Root number, fresh weight, viability, turf quality, and shoot extension rate declined during heat stress at the 14-h photoperiod. The decline was delayed and suppressed by extending photoperiod from 14 to 18 or 22 h. Root growth, turf quality, and shoot extension rate increased with extending photochackova period. Cytokinin content in roots and leaves also decreased during heat stress at the 14-h photoperiod. Plants at the 22-and 18-hphoto-strumarperiods maintained higher cytokinin content in roots at 16 and 32 of heat stress. The differences in total cytokinin content in leaves among photoperiod treatments were mainly due to the variations in trans-zeatin [6-(4-hydroxy-3-methylbut-2-enylamino) purine], zeatin riboside {6-[(E)-4-hydroxy-3-methylbut-2-enylamino]-9-β-D-ribofuranosyl-purine} and isopentenyl adenosine [iPA, 6-(3,3-dimethylallylamino)-9-β-Dribofuranosylpurine]. Cytokinin content in leaves at the 14-and 18-h photoperiods decreased at 16 d of stress, but at the 22-photoperiod it did not decrease until 32 d. These results demonstrated that extended photoperiod increased root and shoot growth and endogenous cytokinin levels under heat stress, suggesting that extende photoperiod could alleviate heat injury in creeping bentgrass.
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【期刊论文】Abscisic Acid Accumulation in Relation to Drought Tolerance in Kentucky Bluegrass
王兆龙, Zhaolong Wang, Bingru Huang, Stacy A. Bonos, and William A. Meyer
HORTSCIENCE 39(5): 1133-1137. 2004.,-0001,():
-1年11月30日
Drought is a major factor limiting plant growth, which has been associated with the accumulation of absicsic acid (ABA) in various species. The objective of the study was to determine the relationship between ABA accumulation and drought tolerance for kentucky bluegrass (Poa pratensis L.) during short-term drought stress. Eight kentucky bluegrass cultivars ('Midnight', 'A82-204', 'RSP', 'Alpine', 'Moonlight', 'Brilliant', 'Washington', and 'Baruzo') were subjected to drought stress in a growth chamber. Water relations, gas exchange rate, and ABA content of leaves were determined at various times during drought stress. Turf quality decreased with drought duration for all eight cultivars. Leaf ABA content increased linearly with drought stress within 11 days of treatment; the rate of the increase was negatively related to the rate of turf quality decline. The rate of ABA accumulation during drought stress was positively correlated with the rates of decrease in turf quality (r2 = 0.6346), increase in electrolyte leakage (r2 = 0.7128), and decrease in relative water content (r2 = 0.5913). There were highly signifi cant negative correlations between ABA content and leaf water potential (r2 = 0.9074), stomatal conductance (r2 = 0.6088), transpiration rate (r2 = 0.6581), net photosynthesis rate (r2 = 0.6956), and a positive correlation between ABA content and electrolyte leakage (r2 = 0.7287). The results indicate that drought tolerance is negatively related to ABA accumulation during shortterm drought stress. ABA accumulation in response to drought stress could be used as a metabolic factor to select for drought tolerance in kentucky bluegrass.
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王兆龙, Qingzhang Xu, Bingru Huang, and Zhaolong Wang
J. AMER. SOC. HORT. SCI. 129(2): 193-197. 2004.,-0001,():
-1年11月30日
Heat injury in creeping bentgrass (Agrostis stolonifera var. palustris Huds) has been associated with decreases in carbohydrate availability. Extending light duration may increase carbohydrate availability and thus improve growth of creeping bentgrass under heat stress. The objective of this study was to investigate whether turf performance and carbohydrate status could be improved by extending daily light duration for creeping bentgrass exposed to supraoptimal temperature conditions. 'Penncross' plants were initially grown in growth chambers set at a day/night temperature of 20/15
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王兆龙, Zhaolong Wang John Pote and Bingru Huang
J. AMER. SOC. HORT. SCI. 128(5): 648-655. 2003.,-0001,():
-1年11月30日
This study was designed to examine whether shoot injury induced by high root-zone temperature is associated with changes in shoot detoxifying metabolism and to determine the level and duration of high root-zone temperatures that would induce physiological changes in two cultivars of creeping bentgrass (Agrostis stolonifera var. palustris Huds) differing in heat tolerance. Plants of 'Penn A-4 (heat tolerant) and' Putter (heat susceptible) were grown in sand and exposed to root-zone temperatures of 20 (control), 21, 22, 23, 25, 27, 31, and 35
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王兆龙, Qingzhang Xu , Bingru Huang , and Zhaolong Wang
HORTSCIENCE 38(3): 449-454. 2003.,-0001,():
-1年11月30日
Turf quality of creeping bentgrass (Agrotis palustris L.) often declines during summer months. Reducing soil temperature alleviates bentgrass quality decline at supraoptimal air temperatures. The objective of this study was to investigate whether reducing soil temperature during the night is more effective than during the day in improving shoot and root growth when air temperature was supraoptimal for creeping bentgrass. The experiment was conducted in growth chambers using water baths to manipulate soil temperatures. Plants were exposed to the following temperature treatments: 1) optimal air and soil temperature during the day and night (20/20
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王兆龙, Zhaolong Wang and Bingru Huang
J. AMER. SOC. HORT. SCI. 128(3): 349-355. 2003.,-0001,():
-1年11月30日
Drought is a major limiting factor for turfgrass growth. Understanding genetic variations in physiological respons es of turfgrass to drought stress would facilitate breeding and management programs to improve drought resistance. This study was designed to evaluate responses of abscisic acid (ABA) accumulation, water relations, and gas exchange to drought stress in four Kentucky bluegrass (Poa pratensis L.) cultivars differing in drought resistance. Plants of 'Midnight and' A82-204 (drought resistant) and 'Brilliant and' RSP (drought susceptible) were grown under wellwatered (control) or drought stress conditions for 25 days in growth chambers. Turf quality, leaf water potential (ψleaf), relative water content (RWC), leaf net photosynthesis rate (Pn), and stomatal conductance (gs) declined, while electrolyte leakage (EL) increased during drought progression in all cul ti vars. The mag ni tudes of the change in these parameters were greater for 'RSP and' Brilliant than for 'Midnight and' A82-204. Leaf ABA content in 'RSP and' Brilliant increased sharply after-days of stress to as much as 34 times the control level at 10 days of drought. Leaf ABA content in 'Midnight and' A82-204 also increased with drought, but to a lesser extent than in the other two cultivars. Leaf ABA level was negatively correlated with ψleaf and gs. 'A82-204 had a sig nifi cant ly lower ABA accumulation rate with changes in ψleaf during drought compared to 'Midnight, 'RSP and 'Brilliant; however, no differences in ABA accumulation rate were detected among the latter three cultivars. In addition, leaf gs was more sensitive to changes in ABA accumulation in 'Midnight and' A82-204 than in 'RSP and' Brilliant. These results demonstrated that drought tolerant cultivars of Kentucky bluegrass were characterized by lower ABA accumulation and less severe decline in ψleaf, Pn, gs, and turf quality during drought stress than drought sensitive cultivars. Drought tolerance of Kentucky bluegrass could be related to sen si tivity of stomata to endogenous accumulation of ABA under drought stress conditions.
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【期刊论文】Effects of Abscisic Acid on Drought Responses of Kentucky Bluegrass
王兆龙, Zhaolong Wang, Bingru Huang, and Qingzhang Xu
J. AMER. SOC. HORT. SCI. 128(1): 36-41. 2003.,-0001,():
-1年11月30日
Abscisic acid (ABA) is an important hormone regulating plant response to drought stress. The objective of this study was to investigate effects of exogenous ABA application on turf performance and physiological activities of kentucky bluegrass (Poa pratensis L.) in response to drought stress. Plants of two kentucky bluegrass cultivars, 'Brilliant' (drought susceptible) and 'Midnight' (drought tolerant), were treated with ABA (100
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王兆龙, Qingzhang Xu, Bingru Huang, and Zhaolong Wang
J. AMER. SOC. HORT. SCI. 127(5): 754-758. 2002.,-0001,():
-1年11月30日
High air and soil temperatures are major factors limiting growth of cool-season grasses. A previous study by the authors reported that a soil temperature reduction of only 3
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