scholarly journals SYMBIOTIC NITROGEN FIXATION PROCESS IN FABA BEAN AND CHICKPEA AS AFFECTED BY BIOLOGICAL AND CHEMICAL CONTROL OF ROOT-ROT

2006 ◽  
Vol 31 (2) ◽  
pp. 963-980
Author(s):  
A.M. Hassanein ◽  
A.M. EI-Garhy ◽  
G.A.A. Mekhemar
Keyword(s):  
Nitrogen Fixation ◽  
Faba Bean ◽  
Root Rot ◽  
Chemical Control ◽  
Symbiotic Nitrogen Fixation

scholarly journals SYMBIOTIC NITROGEN FIXATION OF FABA BEAN PLANTS INOCULATED WITH SALT-TOLERANT Rhizobium ISOLATES

2012 ◽  
Vol 3 (10) ◽  
pp. 411-423 ◽  
Author(s):  
Nagwa M. M. El-Khateeb ◽  
M. E. Shalaby ◽  
E. B. A. Belal ◽  
SH. M. A. El-Gremi
Keyword(s):  
Nitrogen Fixation ◽  
Faba Bean ◽  
Symbiotic Nitrogen Fixation ◽  
Salt Tolerant ◽  
Bean Plants

scholarly journals EFFECT OF TRIFLURALIN AND METRIBUZIN ON FABA BEAN GROWTH, DEVELOPMENT, AND SYMBIOTIC NITROGEN FIXATION

1985 ◽  
Vol 65 (1) ◽  
pp. 9-21 ◽  
Author(s):  
J. BERTHOLET ◽  
K. W. CLARK
Keyword(s):  
Nitrogen Fixation ◽  
Faba Bean ◽  
Root Length ◽  
Symbiotic Nitrogen Fixation ◽  
Nitrogenase Activity ◽  
Dry Weight ◽  
Field Studies ◽  
Total Root Length ◽  
Self Sufficiency ◽  
Root Inhibition

Field studies were conducted to determine if trifluralin [α,α,α-trifluro-2,6,-dinitro-N,N-dipropyl-p-toluidine] and metribuzin [4-amino-6-tert-butyl-3-(methylthio)-a5-triazin-5(4H)one] affect the growth and nitrogen self sufficiency of faba bean (Vicia faba L.). Metribuzin applied at 0.42 kg/ha as a pre-plant incorporated treatment resulted in substantial crop injury in 1981. Compared to the inoculated control, overall reductions averaged over the entire growing season, in plant dry weight, nodule dry weight, nitrogenase activity, and yield due to metribuzin were 59, 85, 92, and 65%, respectively. In 1982 metribuzin at 0.4 kg/ha was not as phytotoxic. Averaged over the season, the reductions recorded in plant dry weight, nodule dry weight, nitrogenase activity, and yield were 25, 33, 49, and 9%, respectively. The differences in phytotoxicity in the 2 yr at the two sites were attributed to differences in soil organic matter, and both the degree and timing of rainfall. During both years trifluralin did not cause any significant reductions in the parameters investigated. Reductions in nodulation and nitrogen fixation as a result of metribuzin application were evident only when the crop was injured and the plants were under stress from herbicide application. Trifluralin at 1.1 kg/ha reduced the phytotoxicity caused by metribuzin when the two chemicals were tank mixed. In 1981 there was a 23% yield improvement with the tank mix compared to metribuzin applied alone. In 1982, non-significant decreases in phytotoxicity with the tank mix were evident for the parameters studied. This reduced phytotoxicity may be explained on the basis of lateral root inhibition attributable to the trifluralin in the tank mix as was evident in the growth room study. The tank mix of trifluralin and metribuzin at 1.1 and 0.4 kg/ha, respectively, caused a 56% reduction in total root length compared to the inoculated control one week after emergence. Conversely, the total root length of the plants receiving only the 0.4 kg/ha rate of metribuzin did not differ significantly from the control. This may allow for greater herbicide uptake in the plants treated with only metribuzin leading to a greater level of injury.Key words: Faba bean, growth, symbiotic nitrogen fixation, trifluralin, metribuzin

Soil moisture and potassium affect the performance of symbiotic nitrogen fixation in faba bean and common bean

1996 ◽  
Vol 184 (1) ◽  
pp. 123-130 ◽  
Author(s):  
U. Ravi Sangakkara ◽  
Ueli A. Hartwig ◽  
Josef N�sberger
Keyword(s):  
Nitrogen Fixation ◽  
Soil Moisture ◽  
Common Bean ◽  
Faba Bean ◽  
Symbiotic Nitrogen Fixation

scholarly journals Transcriptome characterization and large-scale identification of SSR/SNPmarkers in symbiotic nitrogen fixation crop faba bean (Vicia faba L.)

2015 ◽  
Vol 39 ◽  
pp. 459-469 ◽  
Author(s):  
Sundan SURESH ◽  
Tae-Sung KIM ◽  
Sebastin RAVEENDAR ◽  
Joon-Hyeong CHO ◽  
Jung Yoon YI ◽  
...  
Keyword(s):  
Nitrogen Fixation ◽  
Vicia Faba ◽  
Faba Bean ◽  
Large Scale ◽  
Symbiotic Nitrogen Fixation ◽  
Vicia Faba L

scholarly journals Plasmids Related to the Symbiotic Nitrogen Fixation Are Not Only Cooperated Functionally but Also May Have Evolved over a Time Span in Family Rhizobiaceae

2020 ◽  
Vol 12 (11) ◽  
pp. 2002-2014
Author(s):  
Ling-Ling Yang ◽  
Zhao Jiang ◽  
Yan Li ◽  
En-Tao Wang ◽  
Xiao-Yang Zhi
Keyword(s):  
Nitrogen Fixation ◽  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Symbiotic Nitrogen Fixation ◽  
Gene Families ◽  
Time Span ◽  
Soil Conditions ◽  
Gene Gain ◽  
Nitrogen Fixing ◽  
Pan Genome

Abstract Rhizobia are soil bacteria capable of forming symbiotic nitrogen-fixing nodules associated with leguminous plants. In fast-growing legume-nodulating rhizobia, such as the species in the family Rhizobiaceae, the symbiotic plasmid is the main genetic basis for nitrogen-fixing symbiosis, and is susceptible to horizontal gene transfer. To further understand the symbioses evolution in Rhizobiaceae, we analyzed the pan-genome of this family based on 92 genomes of type/reference strains and reconstructed its phylogeny using a phylogenomics approach. Intriguingly, although the genetic expansion that occurred in chromosomal regions was the main reason for the high proportion of low-frequency flexible gene families in the pan-genome, gene gain events associated with accessory plasmids introduced more genes into the genomes of nitrogen-fixing species. For symbiotic plasmids, although horizontal gene transfer frequently occurred, transfer may be impeded by, such as, the host’s physical isolation and soil conditions, even among phylogenetically close species. During coevolution with leguminous hosts, the plasmid system, including accessory and symbiotic plasmids, may have evolved over a time span, and provided rhizobial species with the ability to adapt to various environmental conditions and helped them achieve nitrogen fixation. These findings provide new insights into the phylogeny of Rhizobiaceae and advance our understanding of the evolution of symbiotic nitrogen fixation.

scholarly journals Antioxidation and symbiotic nitrogen fixation function of prxA gene in Mesorhizobium huakuii

2019 ◽  
Vol 8 (10) ◽  
Author(s):  
Sanjiao Wang ◽  
Tiantian Lu ◽  
Qiang Xue ◽  
Ke Xu ◽  
Guojun Cheng
Keyword(s):  
Nitrogen Fixation ◽  
Symbiotic Nitrogen Fixation ◽  
Mesorhizobium Huakuii
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