通过对毛竹林(Bamboo forest,BF)与林缘旷地(Open area of forest edge,OAFE)两类生境蝴蝶花自然种群花部与果实(种子)特征及降雨干扰影响的研究,探讨不同生境中蝴蝶花花部特征适应性及有性各组分的差异。结果表明:(1)竹林生境相对于林...通过对毛竹林(Bamboo forest,BF)与林缘旷地(Open area of forest edge,OAFE)两类生境蝴蝶花自然种群花部与果实(种子)特征及降雨干扰影响的研究,探讨不同生境中蝴蝶花花部特征适应性及有性各组分的差异。结果表明:(1)竹林生境相对于林缘旷地生境,蝴蝶花单花花冠的长、宽较大,子房、花部(除花柄)及单花总生物量较小,比花柄长较大;两类生境蝴蝶花花柄生物量与子房生物量呈正相关(P<0.05),协方差分析表明,两类生境该直线回归的总体斜率间(F=18.420,P<0.001)及总体截距间(F=3791.7,P<0.001)均具有显著差异,竹林生境花柄生物量随子房生物量增大而增大的程度更强。竹林生境的蝴蝶花侧花花冠长与宽最高,竹林生境顶花次之,林缘旷地顶花与林缘旷地侧花最低;花部(除花柄)与全花重都表现为林缘旷地侧花最高,林缘旷地顶花次之,竹林侧花与竹林顶花最低。比花柄长随竹林侧花与竹林顶花-林缘旷地侧花-林缘旷地顶花依次降低;竹林顶花的花柄比率最高,竹林侧花与林缘旷地侧花最低。(2)林缘旷地生境中蝴蝶花的每花序花数、花序结果百分率、单花结果百分率、每结果花序果实数、每结果花序果实重与种子重及花期内每花序掉落花数都高于竹林生境。(3)林缘旷地生境大雨干扰的4个时段花朵掉落数显著高于竹林环境(P<0.01)。不同生境花部形态结构特征表明其自身的生境适应性,林缘旷地生境蝴蝶花为抵御干扰及为获得有性繁殖成功,有性组分的投入更高。展开更多
Hundreds of leucine-rich repeat receptor-like kinases （LRR-RLKs） play indispensable roles in a wide range of plant developmental and physiological processes. The mechanisms controlling LRR-RLKs at a basal and inacti...Hundreds of leucine-rich repeat receptor-like kinases （LRR-RLKs） play indispensable roles in a wide range of plant developmental and physiological processes. The mechanisms controlling LRR-RLKs at a basal and inactive status are essential but rarely studied. BKI1 is the only reported inhibitor of receptor kinases in Arabidopsis, which negatively regulates BRI1 in the brassinosteroid pathway. In this study, we found that BKI1 can also interact with another important LRR-RLK, ERECTA （ER）. Phenotypic analysis showed that BKI1 and ER together regulate plant architecture, including pedicel orientation, which is a newly reported phenotype in the BR- and ER-mediated developmental processes. Gene expression analysis revealed that BKI1 regulates a subset of ER-responsive genes. Kinase assays demonstrated that BKI1 inhibits ER kinase activity. In addition, the release of BKI1 inhibition on ER signaling relies largely on BRI1 activation. Our data provide significant insights into the regulation and activation of RLKs and suggest that BKI1 functions as a common suppressor of the BRI1 and ER signaling pathways.展开更多
[ Objective] This study aimed to develop tissue culture and rapid propagation methods for pedicels of HemerocaUis hybrida. [ Method] Tender pedicels of dwarf H. hybrida were used as experimental materials to sdect cal...[ Objective] This study aimed to develop tissue culture and rapid propagation methods for pedicels of HemerocaUis hybrida. [ Method] Tender pedicels of dwarf H. hybrida were used as experimental materials to sdect callus induction, subculture and rooting media for rapid propagation of H. hybrida.[ Result ] MS ＋ 2.0 - 3.0 mg/L 6-BA ＋ 0.2 - 0.3 mg/L NAA, MS ＋ 1.0 - 2.0 mg/L 6-BA ＋ 0.1 - 0.2 mg/L NAA, MS and 1/2MS ＋ 0.2 mg/L NAA were the appropriate me- dium for callus induction, subculture and rooting, respectively. [ Conclusion] The in vitro culture and clustered seedling rooting technology used in this study are effective methods for rapid propagation of H. hybrida, which provide technieal reference for industrialized production of H. hybrida.展开更多
The results of a comparative study of the structure of some vegetative organs of </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdan...The results of a comparative study of the structure of some vegetative organs of </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">caspium</span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">tschimganicum</span></i><span style="font-family:Verdana;"> growing in natural conditions in Uzbekistan are presented for the first time. During the study of the desert representative </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">caspium</span></i><span style="font-family:Verdana;">, the following diagnostic, structural features were revealed: ribbing of the peduncle and pedicel;thickening of the outer wall of the epidermis and wavy folding of the cuticle of the parenchymal-bundle type of structure</span><span><span style="font-family:Verdana;">;deep submergence of stomata: extensive core: </span><span style="font-family:Verdana;">thinness</span><span style="font-family:Verdana;"> of the crustal parenchyma, the presence of lactic acid in it;the presence of a highly </span><span style="font-family:Verdana;">sclerified</span> <span style="font-family:Verdana;">sclerinchymal</span><span style="font-family:Verdana;"> ring between the crustal parenchyma and the central cylinder: the vastness of the core and the presence of </span><span style="font-family:Verdana;">hydrocytic</span><span style="font-family:Verdana;"> cells in it, as well as the similarity of the structure of </span></span><span style="font-family:Verdana;">the stem and pedicel. In this species, a predominance of xeromorphic characters was noted, due to a tendency indicating </span><span style="font-family:Verdana;">xerophilization</span><span style="font-family:Verdana;"> and adaptation to desert conditions. In </span><i><span style="font-family:Verdan展开更多
文摘通过对毛竹林(Bamboo forest,BF)与林缘旷地(Open area of forest edge,OAFE)两类生境蝴蝶花自然种群花部与果实(种子)特征及降雨干扰影响的研究,探讨不同生境中蝴蝶花花部特征适应性及有性各组分的差异。结果表明:(1)竹林生境相对于林缘旷地生境,蝴蝶花单花花冠的长、宽较大,子房、花部(除花柄)及单花总生物量较小,比花柄长较大;两类生境蝴蝶花花柄生物量与子房生物量呈正相关(P<0.05),协方差分析表明,两类生境该直线回归的总体斜率间(F=18.420,P<0.001)及总体截距间(F=3791.7,P<0.001)均具有显著差异,竹林生境花柄生物量随子房生物量增大而增大的程度更强。竹林生境的蝴蝶花侧花花冠长与宽最高,竹林生境顶花次之,林缘旷地顶花与林缘旷地侧花最低;花部(除花柄)与全花重都表现为林缘旷地侧花最高,林缘旷地顶花次之,竹林侧花与竹林顶花最低。比花柄长随竹林侧花与竹林顶花-林缘旷地侧花-林缘旷地顶花依次降低;竹林顶花的花柄比率最高,竹林侧花与林缘旷地侧花最低。(2)林缘旷地生境中蝴蝶花的每花序花数、花序结果百分率、单花结果百分率、每结果花序果实数、每结果花序果实重与种子重及花期内每花序掉落花数都高于竹林生境。(3)林缘旷地生境大雨干扰的4个时段花朵掉落数显著高于竹林环境(P<0.01)。不同生境花部形态结构特征表明其自身的生境适应性,林缘旷地生境蝴蝶花为抵御干扰及为获得有性繁殖成功,有性组分的投入更高。
文摘Hundreds of leucine-rich repeat receptor-like kinases （LRR-RLKs） play indispensable roles in a wide range of plant developmental and physiological processes. The mechanisms controlling LRR-RLKs at a basal and inactive status are essential but rarely studied. BKI1 is the only reported inhibitor of receptor kinases in Arabidopsis, which negatively regulates BRI1 in the brassinosteroid pathway. In this study, we found that BKI1 can also interact with another important LRR-RLK, ERECTA （ER）. Phenotypic analysis showed that BKI1 and ER together regulate plant architecture, including pedicel orientation, which is a newly reported phenotype in the BR- and ER-mediated developmental processes. Gene expression analysis revealed that BKI1 regulates a subset of ER-responsive genes. Kinase assays demonstrated that BKI1 inhibits ER kinase activity. In addition, the release of BKI1 inhibition on ER signaling relies largely on BRI1 activation. Our data provide significant insights into the regulation and activation of RLKs and suggest that BKI1 functions as a common suppressor of the BRI1 and ER signaling pathways.
基金Supported by China Agricultural University (Yantai) Project(yt2007.14)
文摘[ Objective] This study aimed to develop tissue culture and rapid propagation methods for pedicels of HemerocaUis hybrida. [ Method] Tender pedicels of dwarf H. hybrida were used as experimental materials to sdect callus induction, subculture and rooting media for rapid propagation of H. hybrida.[ Result ] MS ＋ 2.0 - 3.0 mg/L 6-BA ＋ 0.2 - 0.3 mg/L NAA, MS ＋ 1.0 - 2.0 mg/L 6-BA ＋ 0.1 - 0.2 mg/L NAA, MS and 1/2MS ＋ 0.2 mg/L NAA were the appropriate me- dium for callus induction, subculture and rooting, respectively. [ Conclusion] The in vitro culture and clustered seedling rooting technology used in this study are effective methods for rapid propagation of H. hybrida, which provide technieal reference for industrialized production of H. hybrida.
文摘The results of a comparative study of the structure of some vegetative organs of </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">caspium</span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">tschimganicum</span></i><span style="font-family:Verdana;"> growing in natural conditions in Uzbekistan are presented for the first time. During the study of the desert representative </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">caspium</span></i><span style="font-family:Verdana;">, the following diagnostic, structural features were revealed: ribbing of the peduncle and pedicel;thickening of the outer wall of the epidermis and wavy folding of the cuticle of the parenchymal-bundle type of structure</span><span><span style="font-family:Verdana;">;deep submergence of stomata: extensive core: </span><span style="font-family:Verdana;">thinness</span><span style="font-family:Verdana;"> of the crustal parenchyma, the presence of lactic acid in it;the presence of a highly </span><span style="font-family:Verdana;">sclerified</span> <span style="font-family:Verdana;">sclerinchymal</span><span style="font-family:Verdana;"> ring between the crustal parenchyma and the central cylinder: the vastness of the core and the presence of </span><span style="font-family:Verdana;">hydrocytic</span><span style="font-family:Verdana;"> cells in it, as well as the similarity of the structure of </span></span><span style="font-family:Verdana;">the stem and pedicel. In this species, a predominance of xeromorphic characters was noted, due to a tendency indicating </span><span style="font-family:Verdana;">xerophilization</span><span style="font-family:Verdana;"> and adaptation to desert conditions. In </span><i><span style="font-family:Verdan
