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Mallaiah, K. V.
- Nodulated Legumes of Coastal Andhra Pradesh
Authors
Source
Indian Forester, Vol 134, No 7 (2008), Pagination: 951-957Abstract
A survey of nodulation was carried out in coastal regions of Andhra Pradesh and nodulation characteristics of 92 legume species were recorded. All the plants belonging to Fabaceae and Mimosaceae showed nodules, while in Caesalpinaceae except for one species viz., Cassia absus, none of the species showed nodules. The nodulation status of six species viz., Crotalaria hirsuta, Indigofera cassioides, Rhynchosia suaveolens, Tephrosia pulcherima, T. spinosa and Acacia sundra is reported for the first time. Apart from these six species, the nodulation of 13 other nodulating species was also recorded for the first time from India.Keywords
Nodulation Survey, Leguiminosae, Rhizobium, Nodulation Characteristics- Studies on Foliar Diseases of Tree Legumes Caused by Cercosporaceous Fungi
Authors
Source
Indian Forester, Vol 125, No 3 (1999), Pagination: 313-315Abstract
A study was conducted on host-pathogen interaction of Cercospora and Pseudocercospora species with tree legume hosts and the results obtained have been discussed.- Biochemical Changes in Legume Leaves Infected by Species of Pseudocercospora
Authors
Source
Indian Forester, Vol 122, No 12 (1996), Pagination: 1157-1160Abstract
In this paper the biochemical changes in legume leaves on non-crop plants have been studied and the results are described in detail.- Extracellular Polysaccharide Production by Rhizobium Sp. Nodulating Macrotyloma uniflorum (Lam.) Verdc
Authors
1 Department of Microbiology, Acharya Nagarjuna University, Nagarjunanagar, Guntur (A.P.), IN
Source
Asian Journal of Bio Science, Vol 4, No 1 (2009), Pagination: 20-23Abstract
The ability of thirty two Rhizobium strains, isolated from ischolar_main nodules of Macrotyloma uniflorum (Lam.) Verdc. were tested for their production of extracellular polysaccharides (EPS) in Yeast Extract Mannitol (YEM) medium. Among the thirty two isolates, maximum amount of EPS was produced by the isolate HGR12 (4690 μg mL-1). Both growth and EPS production started simultaneously. The production of EPS was maximum in the stationary phase of growth (72 hr) when the medium was supplemented with mannitol (1%). The EPS contained glucose, galactose, xylose, rhamnose and raffinose, which were identified by paper chromatography.Keywords
Extracellular Polysaccharides, Rhizobium Sp., Macrotyloma uniflorum, Legume-Rhizobium Association.- Effect of Salt Concentration on Siderophore Production by Rhizobium strains nodulating Macrotyloma uniflorum (Lam.) verdc
Authors
1 Department of Microbiology, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur (A.P.), IN
Source
Asian Journal of Bio Science, Vol 3, No 2 (2008), Pagination: 352-354Abstract
Thirty two Rhizobium strains isolated from ischolar_main nodules of Macrotyloma uniflorum (Lam.) Verdc. showed siderophore production on Chrome-Azurol S agar medium. Ten Rhizobium strains which showed varying siderophore production at control (without salt) were selected to study the effect of salt concentration on siderophore production. These strains showed low siderophore production at control and it increased with increasing salt concentration up to 1000mM by the strain HGR23 (80μg/mL-1) while two strains HGR16 and HGR30 showed at 400mM concentration. Salt stress enhanced maximum siderophore production (90 μg/mL-1) by the strains HGR5 and HGR8 at 600mM salt concentration over control. Later, the siderophore production decreased with increasing salt concentration. The strains HGR1, HGR4, HGR7, HGR12 and HGR18 showed maximum production at 800mM salt concentration (60.7 μg/mL-1 to 70.8 μgmL-1). Paper Electrophoresis of the siderophore extract showed the presence of trihydroxamate type of siderophores.
Keywords
Siderophore Production, Salt Concentration, Rhizobium species, Macrotyloma uniflorum.- Production of Catechol-Type of Siderophores by Rhizobium Strains from Sesbania sesban (L.) Merr.
Authors
1 Department of Microbiology, Acharya Nagarjuna University, Nagarjuna Nagar (A.P.), IN