Rhizobium tropici ile Enfekte Edilen Fasulye Bitkisinin Azot Kısıtlanan Perlit Kültürü Koşullardaki Gelişimi
نویسندگان
چکیده
Çalışma, yapay aydınlatmalı perlit kültürü koşulları altında, Rhizobium tropici ile azot fiksasyon durumunu belirlemek amacıyla yapılmıştır. Çalışmada Hoagland solüsyonu baz alınarak üç dozu (%100-50-0) ve bakteri suşu, uygulanmıştır. İnorganik eklenen ortamdaki enfekte edilen bitkilerin bitki boyu gövde yaş kuru ağırlığı, kök uzunluğu, yaşı ağırlığı bakımından daha üstün olduğu belirlenmiştir. Rhizobium‘un simbiyotik bağlayabilmesi için azotlu gübrenin besleme programına eklenmesinin faydalı olacağı sonucuna varılmıştır.
منابع مشابه
Rhizobium tropici chromosomal citrate synthase gene.
Two genes encoding citrate synthase, a key enzyme in the Krebs cycle, have been found in Rhizobium tropici. One of them is in the bacterial chromosome, while the other is in the symbiotic plasmid. We sequenced the chromosomal gene and found that it is very similar to the previously reported plasmidic gene sequence in its structural region but not in its regulatory region. The chromosomal gene i...
متن کاملEnhanced symbiotic performance by Rhizobium tropici glycogen synthase mutants.
We isolated a Tn5-induced Rhizobium tropici mutant that has enhanced capacity to oxidize N,N-dimethyl-p-phenylendiamine (DMPD) and therefore has enhanced respiration via cytochrome oxidase. The mutant had increased levels of the cytochromes c(1) and CycM and a small increase in the amount of cytochrome aa(3). In plant tests, the mutant increased the dry weight of Phaseolus vulgaris plants by 20...
متن کاملCarbon Metabolism Enzymes of Rhizobium tropici Cultures and Bacteroids.
We determined the activities of selected enzymes involved in carbon metabolism in free-living cells of Rhizobium tropici CFN299 grown in minimal medium with different carbon sources and in bacteroids of the same strain. The set of enzymatic activities in sucrose-grown cells suggests that the pentose phosphate pathway, with the participation of the Entner-Doudoroff pathway, is probably the prima...
متن کاملRhizobium tropici response to acidity involves activation of glutathione synthesis.
Rhizobium tropici CIAT899 displays intrinsic tolerance to acidity, and efficiently nodulates Phaseolus vulgaris at low pH. By characterizing a gshB mutant strain, glutathione has been previously demonstrated to be essential for R. tropici tolerance to acid stress. The wild-type gshB gene region has been cloned and its transcription profile has been characterized by using quantitative real-time ...
متن کاملCharacterization of two inducible phosphate transport systems in Rhizobium tropici.
Rhizobium tropici forms nitrogen-fixing nodules on the roots of the common bean (Phaseolus vulgaris). Like other legume-Rhizobium symbioses, the bean-R. tropici association is sensitive to the availability of phosphate (P(i)). To better understand phosphorus movement between the bacteroid and the host plant, P(i) transport was characterized in R. tropici. We observed two P(i) transport systems,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ÇOMÜ ziraat fakültesi dergisi
سال: 2023
ISSN: ['2147-8384']
DOI: https://doi.org/10.33202/comuagri.1301521