IN VITRO EVALUATION OF SOME SOIL RHIZOSPHERE BACTERIA FOR BIOLOGICAL CONTROL OF STRIGA HERMONTHICA (DEL.) BENTH

Journal Title: Journal of Advances in Internal Medicine - Year 2011, Vol 2, Issue 2

Abstract

Striga hermonthica is a devastating root parasitic weed on cereals. In the present investigation a series of laboratory experiments was undertaken to study the effects of some soil borne bacteria on germination and haustorium initiation in S. hermonthica. A total of 211 bacterial strains and isolates were screened, in a series of preliminary laboratory experiments, for ability to reduce GR24-induced Striga germination. Isolates and strains displaying inhibitory effects (26) were further screened to confirm their suppressive effects on GR24-induced germination, study their influence on Striga germination in response to ACC and on haustorium initiation in response to DMBQ and sorghum root macerate. Striga seeds conditioned in a broth medium inoculated with bacteria showed differential response to GR24 and ACC. Some of the bacterial isolates and strains reduced germination, irrespective of the stimulant used, while others inhibited germination induced by one of the stimulants, but not the other. Haustorium initiation in response to DMBQ and sorghum root macerate showed differential response to bacterial strains and isolates. Some bacterial isolates and strains had no effects on haustorium initiation, while others reduced it, irrespective of the inducing factor. The differential response in germination to GR24 and ACC could be due to bacterial metabolites that curtail production of ACC or its conversion into ethylene. Curtailment of haustorium initiation by bacteria may be attributed to production of inhibitory compounds and/or extracellular enzymes that degrade DMBQ or curtail its production. The study supports the biotic nature of the reported soil suppressiveness to S. hermonthica and indicates that inoculation of soil with bacteria may perturb early developmental stages of parasitism and reduce the devastating effects of the parasite.

Authors and Affiliations

MOHAMMED MAHGOUB HASSAN*| Environment and Natural Resources Research Institute, Khartoum, Sudan., MIGDAM EL SHEIK ABDEL GANI| National Centre for Research, Khartoum, Sudan., ABDEL GABAR EL TAYEB BABIKER| Sudan University of science and technology faculty of Agriculture.

Keywords

Related Articles

ROMANIAN HEALTH SYSTEM’S REORGANIZATION UNDER THE GLOBAL ECONOMIC CRISIS. ANALYSIS AT EUROPEAN, NATIONAL AND REGIONAL LEVEL

In the context of global economic crisis, Romanian health system is undergoing a reorganization process that presents controversial issues, both positive, and especially negative. According international statistics, Roma...

Ulcerative Colitis complicated by lower limbs thromboemboilism- an unusual case scenario

Patients with inflammatory bowel disease (IBD) have an increased risk of vascular complications. In ulcerative colitis, 10% of deaths are attributed to thromboembolic complications. Arterial thromboembolic complications...

Cardiac Electrophysiological Study & Radiofrequency Ablation: Our Experience in Nepal

Background and aim - Cardiac Electrophysiological Study and Radiofrequency ablation is a form of cardiac intervention for diagnosing and treating cardiac arrhythmias. Various catheters are placed in the various parts of...

Demographic Profile and Extra Intestinal Manifestations of Ulcerative Colitis in Nepalese population: Study from TUTH a Tertiary Care Centre, Kathmandu, Nepal

Background and Aims: This study aims at determining the demographic profile and extra-intestinal manifestations of Ulcerative Colitis in the Nepalese patients treated in a tertiary referral centre. Methods: The study was...

Comparision of Various Vasodilators Regimen During Radial Corornary Angiogram: A Prospective Randomised Trial

Background and Aims: Coronary intervention through radial artery is a preferred over femoral route. Different vasodilators are used to prevent radial artery spasm. Till date there is no study to compare the effects of va...

Download PDF file
  • EP ID EP4816
  • DOI -
  • Views 425
  • Downloads 19

How To Cite

MOHAMMED MAHGOUB HASSAN*, MIGDAM EL SHEIK ABDEL GANI, ABDEL GABAR EL TAYEB BABIKER (2011). IN VITRO EVALUATION OF SOME SOIL RHIZOSPHERE BACTERIA FOR BIOLOGICAL CONTROL OF STRIGA HERMONTHICA (DEL.) BENTH. Journal of Advances in Internal Medicine, 2(2), 41-50. https://europub.co.uk/articles/-A-4816