Plant Science Letters最新文献_第6页

Isolation of mesophyll and paraveinal mesophyll protoplasts from soybean leaves 大豆叶肉和叶鞘旁叶肉原生质体的分离

Plant Science Letters Pub Date : 1984-10-01 DOI: 10.1016/0304-4211(84)90166-4

V. Franceschi, M. Ku, V. Wittenbach

引用次数: 19

Growth inhibition of tobacco protoplast-derived cells by methotrexate: Relationships with nitrate assimilation 甲氨蝶呤对烟草原生质体来源细胞生长的抑制作用:与硝酸盐同化的关系

Plant Science Letters Pub Date : 1984-10-01 DOI: 10.1016/0304-4211(84)90164-0

Annie-Marion Poll, Claudine Missonier, Marie-Angele Grandbastien, Michel Caboche

{"title":"Growth inhibition of tobacco protoplast-derived cells by methotrexate: Relationships with nitrate assimilation","authors":"Annie-Marion Poll, Claudine Missonier, Marie-Angele Grandbastien, Michel Caboche","doi":"10.1016/0304-4211(84)90164-0","DOIUrl":"https://doi.org/10.1016/0304-4211(84)90164-0","url":null,"abstract":"<div><p>Optimal conditions for the protection against growth inhibition induced by methotrexate (MTX) have been investigated. MTX was found to be much more toxic to protoplast-derived tobacco cells grown on nitrate as the sole nitrogen source, than to cells supplied with reduced nitrogen. In a reduced nitrogen-containing medium the growth inhibition was prevented by a mixture of methionine, adenine and thymidine. A valine-resistant tobacco mutant, affected in amino acid uptake, was not able to grow under these conditions, which are permissive for the wild type.</p><p>The effect of MTX on nitrate assimilation was also studied. Partial inhibition of the nitrate reductase (NR) activity of cells cultured in the presence of the drug was observed. When cells were cultured in a medium containing ammonium succinate, intracellular concentrations of the molybdenum cofactor (Mo-cofactor) of NR increased linearly during the culture, and decreased rapidly when MTX was added to the culture medium. A significant and reproducible protection was induced by exogenous xanthine oxidase (XDH) but not by the cofactor extracted from this enzyme.</p></div>","PeriodicalId":20221,"journal":{"name":"Plant Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1984-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-4211(84)90164-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91614904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

A role for homoglutathione in organic sulphur transport to the developing mung bean seed 同谷胱甘肽在有机硫转运到发育中的绿豆种子中的作用

Plant Science Letters Pub Date : 1984-10-01 DOI: 10.1016/0304-4211(84)90172-X

P. K. Macnicol, L. Bergmann

引用次数: 31

SUBCELLULAR LOCATION OF ENZYMES OF AMMONIA ASSIMILATION AND ASPARAGINE SYNTHESIS IN ROOT NODULES OF LUPINUS ALBUS L. 白豆根瘤氨同化和天冬酰胺合成酶的亚细胞定位。

Plant Science Letters Pub Date : 1984-10-01 DOI: 10.1016/0304-4211(84)90173-1

B. Shelp, C. Atkins

引用次数: 27

The effect of Potato II medium for triticale anther culture 马铃薯ⅱ培养基对小黑麦花药培养的影响

Plant Science Letters Pub Date : 1984-10-01 DOI: 10.1016/0304-4211(84)90175-5

Xingzhi Wang, Hu Han

引用次数: 89

Chloroplast DNA diversity in the cytoplasms of sugar beet and its related species 甜菜及其近缘种细胞质叶绿体DNA多样性

Plant Science Letters Pub Date : 1984-10-01 DOI: 10.1016/0304-4211(84)90174-3

T. Mikami, Y. Kishima, M. Sugiura, T. Kinoshita

引用次数: 19

Binding of higher plant NADH-dependent nitrate reductase to different triazine dyes 高等植物nadh依赖性硝酸还原酶与不同三嗪染料的结合

Plant Science Letters Pub Date : 1984-10-01 DOI: 10.1016/0304-4211(84)90170-6

J. Schiemann, G. Kopperschläger

引用次数: 16

Subcellular location of enzymes of ammonia assimilation and asparagine synthesis in root nodules of Lupinus albus L. 白豆根瘤氨同化和天冬酰胺合成酶的亚细胞定位。

Plant Science Letters Pub Date : 1984-10-01 DOI: 10.1016/0304-4211(84)90173-1

B.J. Shelp , C.A. Atkins

引用次数: 27

Fructans polymerised and depolymerised in the internodes of winter wheat as grain-filling progressed 籽粒灌浆过程中，果聚糖在冬小麦节间发生聚合和解聚

Plant Science Letters Pub Date : 1984-10-01 DOI: 10.1016/0304-4211(84)90171-8

W.M. Blacklow, B. Darbyshire, P. Pheloung

{"title":"Fructans polymerised and depolymerised in the internodes of winter wheat as grain-filling progressed","authors":"W.M. Blacklow, B. Darbyshire, P. Pheloung","doi":"10.1016/0304-4211(84)90171-8","DOIUrl":"https://doi.org/10.1016/0304-4211(84)90171-8","url":null,"abstract":"<div><p>Carbohydrates soluble in 70% (v/v) ethanol were the major causes of the changes in the dry matter of the three internodes below the peduncle of a crop of winter wheat grown in Yorkshire, U.K. The concentration of soluble carbohydrates reached a maximum 24 days after anthesis when they were 42% of the dry matter and declined to 3% at grain maturity. Gel permeation chromatography was used to separate the polymers of fructose and there was little indication that the maximum degree of polymerisation was greater than 9 (DP9). Fructans of <span><math><mtext>DP</mtext><mtext> ≧ 5</mtext></math></span> increased rapidly to a maximum concentration of 27% at 24 days while those of DP(3+4) reached a maximum concentration of 9% about 10 days after anthesis. Sucrose, fructose and glucose, in that order, were at lower concentrations in the internodes than the fructans. Polymerisation followed by depolymerisation was explained by the changing balance between net photosynthesis and rates of grain growth. Nitrogen nutrition of the crop had little effect on the quantitative and qualitative changes in the soluble carbohydrates of the internodes.</p></div>","PeriodicalId":20221,"journal":{"name":"Plant Science Letters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1984-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-4211(84)90171-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91614521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 74

A role for homoglutathione in organic sulphur transport to the developing mung bean seed 同谷胱甘肽在有机硫转运到发育中的绿豆种子中的作用

Plant Science Letters Pub Date : 1984-10-01 DOI: 10.1016/0304-4211(84)90172-X

P.K. Macnicol, L. Bergmann

引用次数: 31