Analysis of root-knot nematode and fusarium wilt disease resistance in cotton (Gossypium spp.) using chromosome substitution lines from two alien species

Eight cotton cultivars, with and without aldicarb treatment, were evaluated for their effect on the severity of the root-knot nematode-Fusarium wilt disease complex in cotton. A randomized complete block design with a split-plot arrangement of treatments was used with cotton cultivars as the main plots and nematicide treatments as the subplots. Results in 1994 and 1995 were similar. Yield of lint, boll weight, and wilt and root-gall ratings were different among cultivars and between nematicide treatments both years. Increased lint yield and boll weight, and reduced root-gall and wilt ratings were associated with application of aldicarb. Increased lint percentage was associated with application of aldicarb in 1994, but not in 1995. Fiber micronaire, elongation, uniformity, and strength were different among cultivars, but not between nematicide treatments. Fiber length (UHM; Upper-Half Mean) was different among cultivars and was higher in the aldicarb-treated plots in both years. Numbers of Meloidogyne incognita second stage juveniles and eggs extracted from soil samples were lower in the aldicarb-treated plots in July, but not at harvest, both years. Population densities of M. incognita were not different among cultivars, except the mid-season sample in 1995.

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Influences of some biotic and abiotic factors on protein production and as inducers of Fusarium wilt disease resistance in lupine (Lupinus albus L.)

African Journal of Microbiology Research ◽

10.5897/ajmr12.2165 ◽

2013 ◽

Vol 7 (15) ◽

pp. 1421-1427

Author(s):

I Mohamed Heba ◽

S Abd El Rahman Saieda ◽

M Mazen Mohamed

Keyword(s):

Disease Resistance ◽

Fusarium Wilt ◽

Protein Production ◽

Abiotic Factors ◽

Lupinus Albus ◽

Wilt Disease ◽

Biotic And Abiotic Factors ◽

Fusarium Wilt Disease ◽

Lupinus Albus L

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Development of a Mitochondrial SCAR Marker Related to Susceptibility of Banana (Musa AAA Cavendish) to Fusarium oxysporum f. sp. Cubense Race 4

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha46211053 ◽

2018 ◽

Vol 46 (2) ◽

pp. 509-516

Author(s):

Fang WANG ◽

Ling XIA ◽

Shun LV ◽

Chunxiang XU ◽

Yuqing NIU ◽

...

Keyword(s):

Disease Resistance ◽

Mitochondrial Genome ◽

Fusarium Oxysporum ◽

Fusarium Wilt ◽

Scar Marker ◽

Wilt Disease ◽

Scar Markers ◽

Resistant Cultivars ◽

Fusarium Wilt Disease ◽

Race 4

The use of resistant cultivars is an effective method for the control of banana (Musa spp.) Fusarium wilt caused by race 4 of Fusarium oxysporum f. sp. cubense (Foc4). However, selection of disease-resistant cultivars requires large-scale field evaluations and is time-consuming. Development of early, reliable, and reproducible selection strategies can speed up this process. Sequence characterized amplified region (SCAR) markers have been widely employed in the resistant breeding of many crops. However, to date, there have been no reports about the presence of plant disease resistance-related SCAR markers in mitochondrial genome yet, which also plays a very important role in plant defenses. In the present study, a sequence-related amplified polymorphism (SRAP) marker, a specific fragment of 829 bp, was identified. This fragment could be amplified from Foc4-susceptible but not from the resistant cultivars. It was located in banana mitochondrial genome and mapped near the putative cytochrome c biogenesis ccmB-like mitochondrial protein. This fragment was then successfully converted into a SCAR marker, namely Mito-Foc-S001, which was found to be able to discriminate the resistance from susceptibility to Fusarium wilt disease of bananas with the discriminatory power of the new mark being 96.88%. Thus, this marker can be used in banana (Musa AAA Cavendish) breeding for Fusarium wilt disease resistance.

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