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101.
JJ. ALDASORO C. AEDO F. MUÑOZ GARMENDIA 《Botanical journal of the Linnean Society. Linnean Society of London》1996,121(2):143-158
A multivariate morphometric study of the genus Pyrus in south-west Europe and North Africa shows that five species may be recognized in the area: P. bourgaeana Decne., P. communis L., P. cordata Dew., P. spinosa Forssk, and P. nivalis Jacq. Some valuable characters for identification of these species are proposed. In particular the width of fruit peduncle, petal size, leaf width and petiole length served to discriminate the taxa. Several names such as P. gharbiona Trab., P. cossonii Rehder (|M= P. longipes Balansa ex Coss. & Durieu) and P. boisseriana Buhse, are regarded as synonyms of P. cordata , while P. marnormis Trab. of P. bourgaeana. Consequently a check-list and a key to these species are provided. 相似文献
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VvPIP2;4N aquaporin involvement in controlling leaf hydraulic capacitance and resistance in grapevine 下载免费PDF全文
Marco Vitali Hervé Cochard Giorgio Gambino Alexandre Ponomarenko Irene Perrone Claudio Lovisolo 《Physiologia plantarum》2016,158(3):284-296
Hydraulic capacitance (C) in a plant tissue buffers the xylem tension, storing and releasing water and has been highlighted in recent years as an important factor that affects water relations such as drought tolerance and embolism formation. Aquaporins (AQPs) are well known to control leaf hydraulic resistance (Rh) but their role in the control of C is unknown. Here, we assess Rh and C on detached grapevines wild‐type (WT) (cv. Brachetto) leaves and over‐expressing the aquaporin gene VvPIP2;4N (OE). For this purpose, we developed a new method inspired from the pressure‐volume curve technique and the rehydration‐kinetic‐method, which allowed us to monitor the dynamics of dehydration and rehydration in the same leaf. The recovery after dehydration was measured in dark, light non‐transpirative conditions, light‐transpirative conditions and light‐transpirative condition adding abscisic acid. Pressurizing to dehydrate leaves in the OE line, the recorded Rh and C were respectively lower and higher than those in the WT. The same results were obtained in the dark recovery by rehydration treatment. In the presence of light, either when leaves transpired or not (by depressing vapor pressure deficit), the described effects disappeared. The change in Rh and C did not affect the kinetics of desiccation of detached leaves in dark in air, in OE plants compared to WT ones. Our study highlighted that both Rh and C were influenced by the constitutive over‐expression of VvPIP2;4N. The effect of AQPs on C is reported here for the first time and may involve a modulation of cell reflection coefficient. 相似文献
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Analysis of the DNA Interaction of Copper Compounds Belonging to the Casiopeínas® Antitumoral Series
Lorena Becco Juan Carlos García-Ramos Lena Ruiz Azuara Dinorah Gambino Beatriz Garat 《Biological trace element research》2014,161(2):210-215
Casiopeínas® are mixed-chelate copper complexes with antitumor tested potential. Their activity, both in vitro and in vivo, as antiproliferative, cytotoxic, and genotoxic drugs has been assessed. Biological results of these copper compounds have deserved some of them entering clinical trials. Significant efforts have been devoted to the in-depth identification of their mechanism of action. Using gel electrophoresis analysis, we have previously shown that the interaction of the Casiopeínas® Cas II-gly, [Cu(4,7-dimethyl-1,10-phenanthroline)(glycinate)]NO3 with DNA, triggers the cleavage of the biomolecule by a free radical mechanism. In this work, we further study the behavior of different complexes of the same Casiopeínas® series also including glycinate as co-ligand {Cas VI-gly (5,6 dimethyl-1,10-phenanthroline glycinato copper(II) nitrate), Cas VII-gly (1,10-phenanthroline glycinato copper(II) nitrate), and Cas IX-gly (2,2′-bipyridine glycinato copper(II) nitrate)} and of a Casiopeínas® with a different co-ligand (Cas III-Cs; 4,7-dimethyl-1,10-phenanthroline salicylaldehydato-copper(II) nitrate). While all of them produce DNA degradation, the performance in the presence of a radical scavenger suggests the existence of differences in their mechanism of interaction with DNA. 相似文献
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Simona Bo Giovanni Musso Guglielmo Beccuti Maurizio Fadda Debora Fedele Roberto Gambino Luigi Gentile Marilena Durazzo Ezio Ghigo Maurizio Cassader 《PloS one》2014,9(9)