Screening of Brinjal Cultivars against Bacterial Wilt Disease under Artificially Inoculated Conditions at Bastar Plateau Zone of Chhattisgarh

Bhanwar, R. R.; Tiwari, Pradeep Kumar; Thakur, A.K.

doi:10.20546/ijcmas.2019.802.364

Cited by 1 publication

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“…The well's hue change was an indication of the oxidation reaction. Four of the six biovars known to exist in the world-bv1, bv2, bv2T, and bv3-have been shown to infect potato plants in India [25]. In present study out of ten isolates of R. solanacearum eight isolates belonged to bv2; only two isolates (RsSt5 and RsSt7) belonged to bv2T.…”

Section: Biovar Determination Of Ralstonia Solanacearummentioning

confidence: 45%

Races and Biovar Characterization of Ralstonia solanacearum Causing Bacterial Wilt Disease of Potato

Joshi,

Patel,

Parmar

et al. 2023

IJECC

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Ralstonia solanacearum, the causative agent of brown rot/bacterial wilt, is a major cause of severe potato illnesses in many impoverished nations located in tropical and subtropical regions of the world. When it occurs, the disease is to blame for significant losses to the potato industry. The illness has the potential to completely destroy a crop and stop using a piece of land for potato cultivation for a number of years. A survey was carried out to investigate the extent of Ralstonia solanacearum-caused bacterial wilt of potato crops in important potato-growing talukas in the Banaskantha district of Gujarat, India, including Deesa, Dantiwada, Palanpur, and Amirgadh. The frequency of bacterial wilt disease in potatoes is rather low in this region. Four talukas were utilised to identify ten isolates (RsSt1 to RsSt10) of R. solanacearum, which were then used to determine the biovar and race. Gram-negative rod-shaped cells were present in the isolates of R. solanacearum. On TZC agar medium, these isolates developed colonies that were creamy or dull white in colour with a hint of pink or red in the centre. The oxidation of disaccharides (sucrose, lactose, maltose) and sugar alcohols (manitol, sorbitol, and dulcitol) by R. solanacearum isolates was used to determine the biovar characteristics. This revealed that, of the ten isolates, eight were classified as bv2, and the two remaining isolates (RsSt5 and RsSt7) belonged to bv2T. The pathogenicity test conducted on tobacco, tomato, and brinjal allowed for the race identification of R. solanacearum isolates, which were classified as race 3 due to their limited host range and ability to exclusively elicit wilt symptoms in potatoes and tomatoes. As a result, Races 3 and bv2 and bv2T were represented among the R. solanacearum isolates that caused bacterial wilt of potatoes in the Banaskantha district.

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Section: Biovar Determination Of Ralstonia Solanacearummentioning

confidence: 45%