scholarly journals DISTRIBUTION OF MONOSPORASCUS ROOT ROT AND VINE DECLINE DISEASE OF CUCURBITS IN EGYPT

2009 ◽  
Vol 34 (6) ◽  
pp. 6811-6821
Author(s):  
S. El-Desouky, ◽  
M. Awad ◽  
Majdah Al-Tuwaijri
Keyword(s):  
Root Rot ◽  
Decline Disease ◽  
Vine Decline

scholarly journals Comparison of Fusarium solani and F. oxysporum as Causal Agents of Fruit Rot and Root Rot of Muskmelon

HortScience ◽  
1993 ◽  
Vol 28 (12) ◽  
pp. 1174-1177 ◽  
Author(s):  
E.R. Champaco ◽  
R.D. Martyn ◽  
M.E. Miller
Keyword(s):  
Fusarium Wilt ◽  
Fusarium Solani ◽  
Root Rot ◽  
Fruit Rot ◽  
Breeding Line ◽  
Foot Rot ◽  
Race 1 ◽  
Decline Disease ◽  
Vine Decline

Rotting muskmelon fruits commonly are associated with commercial fields that are affected by the root rot/vine decline disease syndrome found in southern Texas. Four isolates of Fusarium solani previously shown to be either weakly pathogenic or nonpathogenic to muskmelon seedlings caused extensive rot on mechanically wounded muskmelon fruits. Two of these isolates caused more extensive fruit rot than either F. solani (Mart.) Sacc. f. sp. cucurbitae W.C. Snyder & H.N. Hans. or F. oxysporum Schlechtend.:Fr. melonis (Leach & Currence) W.C. Snyder & H.N. Hans., causal agents of fusarium crown and foot rot of cucurbits and fusarium wilt of muskmelon, respectively. In other tests, root-dip inoculation of seedlings showed that all muskmelon cultigens included in this study and the breeding line MR-1 were susceptible to a California and an Arkansas strain of F. s. f. sp. cucurbitae race 1.

Potential of indigenous antagonistic rhizobacteria in the biological control of Monosporascus root rot and vine decline disease of muskmelon

2020 ◽  
Vol 70 (5) ◽  
pp. 371-380
Author(s):  
Dhuha Sulaiman Salim Al-Daghari ◽  
Abdullah Mohammed Al-Sadi ◽  
Rhonda Janke ◽  
Issa Hashil Al-Mahmooli ◽  
Rethinasamy Velazhahan
Keyword(s):  
Biological Control ◽  
Root Rot ◽  
Decline Disease ◽  
Vine Decline

scholarly journals THE ROLE OF A THERMOPHILIC FUNGUS IN THE ROOT ROT / VINE DECLINE DISEASE OF MUSKMELON IN TEXAS.

HortScience ◽  
1991 ◽  
Vol 26 (5) ◽  
pp. 488c-488
Author(s):  
Ray D. Martyn ◽  
J. C. Mertely ◽  
M. E. Miller ◽  
B. D. Bruton
Keyword(s):  
Root Rot ◽  
Cucumis Melo ◽  
Rio Grande Valley ◽  
Similar Species ◽  
Lower Rio Grande Valley ◽  
Optimum Ph ◽  
Decline Disease ◽  
Pathogenicity Tests ◽  
Vine Decline

A disease of muskmelon (Cucumis melo L.) characterized by a vine decline and a cortical root rot was first observed in the Lower Rio Grande Valley of Texas in 1986. In 1990, isolations from diseased plants collected from four commercial production fields yielded the fungus Monosporascus cannonballus. Pathogenicity tests with eight isolates confirmed Koch's postulates; however, there were differences in aggressiveness observed among isolates. M. cannonballus is an ascomycete fungus that typically produces only one (rarely two), round, jet-black ascospore per ascus. There is no known asexual stage. Temperature optimum of one isolate was 35 C. The optimum pH for growth was 6-7, but it grew well up to pH 9. M. cannonballus was first reported on muskmelon in 1970 from Arizona and recently was found in Japan under glass house culture. The presence of this fungus in Texas marks only the third report of this species worldwide, although a similar species (M. eutypoides) is the cause of a collapse of melon plants in Israel.

Diversity of soil-borne fungal species associated to root rot and vine decline of melon in Sardinia (Italy)

2021 ◽  
Author(s):  
Alessandro Infantino ◽  
Virgilio Balmas ◽  
Nicola Schianchi ◽  
Stefano Mocali ◽  
Carolina Chiellini ◽  
...  
Keyword(s):  
Root Rot ◽  
Fungal Species ◽  
Vine Decline

scholarly journals WEEDS AS POTENTIAL HOSTS FOR FUNGAL ROOT PATHOGENS OF WATERMELON

2019 ◽  
Vol 32 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Rui Sales Júnior ◽  
Ana Paula Medeiros dos Santos Rodrigues ◽  
Andreia Mitsa Paiva Negreiros ◽  
Márcia Michelle de Queiroz Ambrósio ◽  
Hailton da Silva Barboza ◽  
...  
Keyword(s):  
Root Rot ◽  
Citrullus Lanatus ◽  
Phytopathogenic Fungi ◽  
Soilborne Pathogens ◽  
Weed Species ◽  
Amaranthus Spinosus ◽  
Trianthema Portulacastrum ◽  
Different Types ◽  
Vine Decline ◽  
Boerhavia Diffusa

ABSTRACT Many watermelon (Citrullus lanatus) diseases are caused by soilborne pathogens in Brazil and worldwide. The goal of this study was to identify and quantify the frequency of phytopathogenic fungi associated with watermelon root rot and vine decline that were also present in the roots of weeds in the major watermelon production regions in the state of Rio Grande do Norte, Brazil. We collected root samples from 10 of the most prevalent weed species in 16 watermelon producing areas. The plants were identified and their frequencies in the fields were calculated. The fungi found in the weed roots were isolated and the main genera associated with watermelon vine decline were identified. We identified 13 weed species belonging to nine botanical families. The weed species with the highest frequencies found in the field were Amaranthus spinosus (25.0%), Trianthema portulacastrum (18.8%), Commelina sp. (18.8%), and Boerhavia diffusa (12.5%). The fungi Macrophomina, Rhizoctonia, and Monosporascus were isolated from the roots of the weed plants. While Macrophomina was isolated from 12 different types of plants, Rhizoctonia and Monosporascus were isolated from four and two different plant species, respectively.

scholarly journals A Natural Reservoir and Transmission Vector of Grapevine Vein Clearing Virus

Plant Disease ◽  
2019 ◽  
Vol 103 (3) ◽  
pp. 571-577 ◽  
Author(s):  
Sylvia M. Petersen ◽  
Cory Keith ◽  
Kaylie Austin ◽  
Susanne Howard ◽  
Li Su ◽  
...  
Keyword(s):  
Disease Management ◽  
Severe Disease ◽  
Viral Evolution ◽  
Insect Vector ◽  
Natural Reservoir ◽  
Vein Clearing ◽  
Decline Disease ◽  
Vine Decline ◽  
Full Length Genome ◽  
Aphid Populations

Grapevine vein clearing virus (GVCV) is associated with a vein-clearing and vine-decline disease. In this study, we surveyed wild Ampelopsis cordata from the Vitaceae family and found that 31% (35 of 113) of native A. cordata plants are infected with GVCV. The full-length genome sequence of one GVCV isolate from A. cordata shared 99.8% identical nucleotides with an isolate from a nearby cultivated ‘Chardonel’ grapevine, suggesting the occurrence of an insect vector. To identify a vector, we collected Aphis illinoisensis (common name: grape aphids) from wild A. cordata plants and detected GVCV in the aphid populations. We found that A. illinoisensis is capable of transmitting GVCV from infected A. cordata to Chardonel grapevines in the greenhouse. Upon transmission, GVCV caused severe symptoms on the infected Chardonel 45 days post transmission. We conclude that wild GVCV isolates from A. cordata are capable of inducing a severe disease on cultivated grapevines once they spread from native A. cordata to vineyards via grape aphids. The discovery of a natural reservoir and an insect vector of GVCV provides timely knowledge for disease management in vineyards and critical clues on viral evolution and epidemiology.

scholarly journals Monosporascus eutypoides, a Cause of Root Rot and Vine Decline in Tunisia, and Evidence that M. cannonballus and M. eutypoides Are Distinct Species

Plant Disease ◽  
2013 ◽  
Vol 97 (6) ◽  
pp. 737-743 ◽  
Author(s):  
I. Ben Salem ◽  
K. C. Correia ◽  
N. Boughalleb ◽  
S. J. Michereff ◽  
M. León ◽  
...  
Keyword(s):  
Root Rot ◽  
Internal Transcribed Spacer ◽  
Gene Sequence ◽  
Elongation Factor ◽  
Its Region ◽  
Distinct Species ◽  
Nuclear Ribosomal Dna ◽  
Geographic Origins ◽  
Vine Decline ◽  
Elongation Factor 1

Three Monosporascus eutypoides–like isolates recovered from cucurbit plants with symptoms of Monosporascus root rot and vine decline in Tunisia were compared to 28 isolates of M. cannonballus from 12 countries for phenotypic, genomic, and pathogenicity characteristics. Morphologically, M. cannonballus and M. eutypoides–like cultures were similar, each producing fertile perithecia in culture containing globose, smooth, dark brown to black ascospores. Nevertheless, all M. cannonballus isolates had one ascospore per ascus, while M. eutypoides–like isolates had mainly two to three ascospores per ascus (rarely one). The employment of the internal transcribed spacer (ITS) of nuclear ribosomal DNA, the elongation factor 1-α (EF-1α), and the β-tubulin (β-tub) gene sequence diversity analyses and the resulting phylogenies identified a level of polymorphism that enabled separation of M. cannonballus and M. eutypoides–like isolates. All isolates of M. cannonballus had identical EF-1α and β-tub sequences irrespective of very diverse geographic origins, which were different from the EF-1α and β-tub sequences of the M. eutypoides–like isolates (96 and 97% similarity, respectively). Similar results were obtained for the ITS region of rDNA. In addition, of three M. eutypoides–like isolates tested for pathogenicity, all three were pathogenic on watermelon, two were pathogenic on muskmelon, but only one was pathogenic on cucumber. The results demonstrate that the M. eutypoides–like isolates belong to the species M. eutypoides, and that M. cannonballus and M. eutypoides are distinct species.

scholarly journals Effect of grafting on resistance to vine decline disease, yield and fruit quality in muskmelon cv. Sawadi

2019 ◽  
Vol 23 (1) ◽  
pp. 2
Author(s):  
Qais Al-Mawaali ◽  
Abdullah M Al-Sadi ◽  
Fahad A Al-Said ◽  
Mohammed Shafiur Rahman ◽  
Intisar Al-Zakwani ◽  
...  
Keyword(s):  
Field Experiments ◽  
Consumer Preference ◽  
Fruit Shape ◽  
Consumer Acceptance ◽  
High Yield ◽  
Farming Community ◽  
Yield Production ◽  
Decline Disease ◽  
Vine Decline ◽  
Graft Success

A study was conducted to evaluate graft success, resistance to vine decline disease and effect of grafting on quality and yield of muskmelon. Two field experiments, conducted in Oman, showed that muskmelon cv. Sawadi grafted on six cucurbit rootstocks gave high grafting success: 97.6-99.1% (avg. 98.6%) and 92.4-96.9% (avg. 95.3%) under field conditions in fall 2012 and spring 2013 respectively. No significant differences were observed between seasons among the six treatments and a non-grafted control in consumer preference for odor and firmness, fruit shape, flesh vitamin C, micronutrient content  and TSS (sucrose %) or pH in spring 2013 (P > 0.05). The concentration of phosphorus and sodium significantly decreased in both seasons in all treatments in comparison to the control (P > 0.05). In both seasons potassium content significantly increased when Rsscih7458 and Mubyeongjangsoo rootstocks were used (P < 0.05). Strong Tosa rootstocks showed zero graft failure, high resistance to vine decline disease, high yield production and higher TSS (sucrose %) as compared to other rootstocks. Strong Tosa and Tetsukabuto rootstocks showed significantly higher consumer acceptance for rind color, flesh color and overall consumer acceptance in spring 2013 and was also less affected by seasonal changes. Results suggested that by grafting muskmelon cv. Sawadi some quality attributes may be improved in addition to the increased level of resistance to disease. However, additional trials are required to make final recommendations for the farming community.

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