Efficacy and Soil Persistence of Fusarium solani f. sp. cucurbitae for Control of Texas Gourd (Cucurbita texana)

Weidemann, G. J.

doi:10.1094/pd-72-0036

Cited by 30 publications

(18 citation statements)

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“…On the contrary Fusarium root rot has not been noticed during the last 20yr. This situation was supported by the fact that F solani f sp cucurbitae race 1 was tested as a biological control agent of the weed, Texas gourd, Cucurbita texana A Gray, which is very susceptible (Weidemann and Templeton, 1988).…”

Section: Perithecia Formation Between Isolatesmentioning

confidence: 99%

Susceptibility of Cucurbita spp to the cucurbit root-rot fungus, Fusarium solani f sp cucurbitae race 1

Nagao

Sato²,

Ogiwara³

1994

Agronomie

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Section: Perithecia Formation Between Isolatesmentioning

confidence: 99%

Susceptibility of Cucurbita spp to the cucurbit root-rot fungus, Fusarium solani f sp cucurbitae race 1

Nagao

Sato²,

Ogiwara³

1994

Agronomie

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“…They also expressed the nptII gene which cosegregates with the CP genes (Fuchs and Gonsalves, 1995;Tricoli et al, 1995). The wild squash species C. texana which is distributed in Texas (Boyette et al, 1984;Decker, 1988;Nee, 1990;Oliver et al, 1983;Weidemann and Templeton, 1988) was used as recipient of transgenic pollen. Plants of C. texana are susceptible to CMV, ZYMV, and WMV, and do not contain the nptII gene.…”

Section: Characteristics Of Transgenic Squash Czw-3 and C Texanamentioning

confidence: 99%

“…ovifera var. texana (referred to here as C. texana), are commonly found in the Southern parts of the United States (Boyette et al, 1984;Decker, 1988;Nee, 1990;Oliver et al, 1983;Weidemann and Templeton, 1988). Furthermore, North, Central, and South America are the centers of origin and diversity for squash species (Wilson, 1990), and nontransgenic squash readily hybridize without loss of fertility to C. texana (Kirkpatrick and Wilson, 1988;Wilson and Payne, 1994).…”

Section: Introductionmentioning

confidence: 99%

Movement of coat protein genes from a commercial virus-resistant transgenic squash into a wild relative

Fuchs

Chirco

Gonsalves

2004

Environ. Biosafety Res.

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We monitored pollen-mediated transgene dissemination from commercial transgenic squash CZW-3 into its wild relative Cucurbita pepo ssp. ovifera var. texana (C. texana). Transgenic squash CZW-3 expresses the neomycin phosphotransferase II (nptII) gene and the coat protein (CP) genes of Cucumber mosaic virus (CMV), Zucchini yellow mosaic virus (ZYMV), and Watermelon mosaic virus (WMV); thereby, it is resistant to these three aphid-borne viruses. The rate of NPT II and CP transgene introgression increased with overlapping flowering patterns and a high ratio of transgenic F1 hybrids (C. texana × CZW-3) to C. texana. Transgene transfer also readily occurred from transgenic F1 hybrids into C. texana over three generations in field settings where test plants grew sympatrically and viruses were not severely limiting the growth, and fruit and seed production of C. texana. In contrast, introgression of the transgenes into C. texana was not sustained under conditions of high viral disease pressure. As expected, C. texana progeny that acquired the CP transgenes exhibited resistance to CMV, ZYMV, and WMV. This is the first report on transgene dissemination from a transgenic crop that exhibits disease resistance and hybridizes with a wild plant species without loss of fertility.

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“…Granules or pellets are applied to the soil, usually when the object is to control emerging seedlings, as in the control of Cucurbita texana (Texas Gourd) by Fusarium solani f. sp. cucurbitae (Weidemann & Templeton, 1988) or to achieve repeated infection of weeds in the rosette stage. In such instances, control has proved more effective than by spraying conidial suspensions on to foliage.…”

Section: Increasing Effectiveness Through Formulation and Application 'mentioning

confidence: 99%

The control of weeds through fungi; principles and prospects

Hasan¹,

Ayres

1990

New Phytologist

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summary The biocontrol of weeds by the introduction of exotic fungi (the classical method) has proved successful, most notably in the control of skeleton weed (Chondrilla juncea) in the wheat belt of Australia by the introduced rust, Puccinia chondrillina. There is now increasing interest in an alternative, inundative, method of weed control in which the target is controlled by a massive inoculation with a host‐specific indigenous fungal pathogen. It is proposed that through an increased understanding of host ‐ parasite interactions, in particular the enzymes and toxins that fungi use to disrupt the structure and function of weeds, screening of naturally occurring pathogens can be made more efficient. It should be possible in the immediate future to improve the efficacy of many host‐specific pathogens that currently cause little injury. In the longer term, changes in host specificity may be achieved through the techniques of genetic engineering. Meanwhile, improved formulation and methods of application can improve the range and reliability of mycoherbicides. The use of integrated control methods in which fungi are used in pairs, or in combination with either reduced rates of chemical herbicides or with arthropods, also offers hope for development. Studies of competition between plants of different species show that stunting of the weed, rather than complete kill, may be sufficient to protect crop growth. Two mycoherbicides have been successfully used in the field for almost ten years; in the next ten years we may expect to see a rapid increase in their number.

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Efficacy and Soil Persistence of Fusarium solani f. sp. cucurbitae for Control of Texas Gourd (Cucurbita texana)

Cited by 30 publications

References 0 publications

Susceptibility of Cucurbita spp to the cucurbit root-rot fungus, Fusarium solani f sp cucurbitae race 1

Susceptibility of Cucurbita spp to the cucurbit root-rot fungus, Fusarium solani f sp cucurbitae race 1

Movement of coat protein genes from a commercial virus-resistant transgenic squash into a wild relative

The control of weeds through fungi; principles and prospects

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