Results 261 to 270 of about 44,303 (310)

A plant regulator controlling development of symbiotic root nodules

Nature, 1999
Symbiotic nitrogen-fixing root nodules on legumes are founded by root cortical cells that de-differentiate and restart cell division to establish nodule primordia. Bacterial microsymbionts invade these primordia through infection threads laid down by the plant and, after endocytosis, membrane-enclosed bacteroids occupy cells in the nitrogen-fixing ...
Schauser, L., Roussis, A., Stiller, J., Stougaard, J.   +3 more
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Hormones in plants bearing nitrogen-fixing root nodules: Cytokinin levels in roots and root nodules of some non-leguminous plants

Zeitschrift für Pflanzenphysiologie, 1977
Summary A comparison was made of cytokinin levels, determined by bioassay, in extracts of root nodules and normal roots of five non-leguminous nodule-bearing angiosperms, viz. Purshia tridentata ( Pursh ) D. C., Myrica gale L., Alnus rubra Bong. , Hippophae rhamnoides L. and Colletia paradoxa ( Spreng. ) Escalante .
I.E. Henson, C.T. Wheeler
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Nodule induction on plant roots by Rhizobium

Trends in Biochemical Sciences, 1986
Abstract Formation of nitrogen-fixing nodules on plant roots is a consequence of expression of symbiotic genes from Rhizobium and the plant. Recognition of the appropriate legume host and nodule induction are controlled by two sets of Rhizobium genes, common and host-specific nodulation genes, which are turned on by a plant factor.
Eva Kondorosi, Adam Kondorosi
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HORMONES IN PLANTS BEARING NITROGEN‐FIXING ROOT NODULES:

New Phytologist, 1977
SUMMARYThe content of gibberellin‐like (GA‐like) substances in various parts of young alder (Alnus glutinosa (L.) Gaertn.) plants was estimated by means of the lettuce hypocotyl bioassay. The highest levels of GA‐like activity were found in the root nodules, of dormant plants, plants emerging from dormancy, and plants in full leaf.No major differences ...
I. E. HENSON, C. T. WHEELER
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HæMoglobin in the Root Nodules of Leguminous Plants

Nature, 1945
THE red pigment in the root nodules of a leguminous plant (Vicia Faba) was investigated for the first time by Pietz1. He believed it to be identical with the red intermediate product which appears during the oxidation of tyrosine or of dihydroxyphenylalanine ('dopa') catalysed by tyro-sinase.
D. KEILIN, Y. L. WANG
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Nitrogen Fixation in Non-Legume Root Nodule Plants

Nature, 1957
IT has been shown1–3 that fixation of atmospheric nitrogen is associated with nodule-bearing plants of alder (Alnus glutinosa), bog myrtle (Myrica gale) and sea buckthorn (Hippophae rhamnoides), enabling the plants to grow in a rooting medium free of combined nitrogen just as in the case of legumes. This is well illustrated by Fig.
G. BOND, I. C. GARDNER
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Nodulation of rooted leaves in leguminous plants

Plant and Soil, 1971
Root formation was obtained on the petioles of detached leaves of several leguminous plants, particularly on the primary leaves of bean. Root formation is easily obtained in artificial light at a temperature of 22 to 24°C. In the greenhouse it is optimal in early spring and late autumn.
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Release of mineral nitrogen from plant root nodules

Soil Biology and Biochemistry, 1991
Abstract Root nodules from a variety of nodulated leguminous and non-leguminous plants were added to soil samples and the net release of mineral N was monitored periodically for 56 or 98 days. Over these periods, various nodules demonstrated either net N immobilisation, mineralisation, or immobilisation followed by mineralisation.
D.A. Wardle, L.G. Greenfield
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Metabolite pattern in root nodules of the actinorhizal plant Casuarina equisetifolia

Phytochemistry, 2021
Casuarina equisetifolia L. (Casuarinaceae), an actinorhizal plant, exhibits mutualistic symbiosis with Frankia and promotes nitrogen fixation in root nodules. While the exchange of metabolites between host plant and microsymbiont is well understood in legume symbioses, the situation in the symbiosis between nitrogen-fixing Frankia and actinorhizal ...
Yu, Jin, Yingting, Xu, Zhengwan, Huang, Zhongyu, Zhou, Xiaoyi, Wei   +4 more
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Endophyte sporulation in root nodules of actinorhizal plants

Physiologia Plantarum, 1987
All strains of isolated Frankia possess the genetic capacity to form sporangia since, when grown in vitro, they usually sporulate freely, depending on the physical and chemical environment in which they are cultured. Endophytic sporulation involving Frankia differentiation of sporangia within root nodules has been described in only 16 host species in 9
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