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001-es BibID:	BIBFORM121280
Első szerző:	Yasseen Gafar, Nadia
Cím:	In vitro study of endophytic bacteria and carbohydrates and their combination on early developmental stages of Striga hermonthica (Del.) Benth / Nadia Yasseen Gafar, Mohammed Mahgoub Hassan, Magdoline Mustafa Ahmed, Awad Galal Osman, Migdam Elsheikh Abdelgani, Abdelgabar Eltayeb Babiker
Dátum:	2016
ISSN:	1995-0756 1998-1066
Megjegyzések:	Striga hermonthicais a serious parasitic weed on cereal crops which causes severe damage to its host. Three endophytic bacterial isolates (isolated from sugarcane crop) and two carbohydrates, glucose and sucrose, were evaluated in a laboratory, for effects on the parasite germination and haustorium initiation. The results indicated that bacterial isolates ISO20, ISO29 and ISO30,significantly inhibited germination as compared to the controls, irrespective of conditioning status of Striga seed. The two carbohydrates, alone or in combination with bacterial isolates, were evaluated on Striga germination. Results revealed that each of the two carbohydrates, irrespective of the concentration, reduced germination significantly by 29 - 100 %,as compared to the control. The depressive effects of the carbohydrates on Striga germination increased with increasing concentrations, in response to GR24. Furthermore, glucose was more suppressive to Striga germination than sucrose. The combination of glucose and sucrose sustained the highest inhibitory effects (63 - 67 %) as compared to each carbohydrate alone and the controls. However, the combination between bacterial isolates plus glucose or sucrose was the most inhibitory than each bacteria or carbohydrate alone. They reduced germination by 79 and 100 % in response to GR24 as compared to conditioning media. Moreover, both carbohydrates reduced haustorium initiation, significantly in response to DMBQ. Furthermore, seeds conditioned in sucrose or glucose at the highest concentration (10 g/100 ml) and similarly treated with DMBQ did not form haustoria. Bacterial isolates were identified using morphological and biochemical tests. The establishment of the inhibitory effect of the most promising bacterial isolateISO20(Gluconacetoacter spp.)on early developmental stages of Striga is a step towards utilizing such bacteria as biocontrol agents against S. hermonthica. In conclusion: carbohydrates enhanced the efficacy of the bacteria as a suppressor of the parasite and reducer of the parasite debilitating effects
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk bacterial isolates carbohydrates Striga germination haustorium
Megjelenés:	Advances in Environmental Biology. - 10 (2016), p. 66-74. -
További szerzők:	Hassan, Mohammed Mahgoub Ahmed, Osman Magdoline Mustafa (1984-) Osman, Awad Galal Abdelgani, Migdam Elsheikh Babiker, Abdelgabar Eltayeb
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