Joseph Esnard

Cornell University

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Bert M. Zuckerman

University of Massachusetts Amherst

C. M. Sean Carrington

University of the West Indies

Paul R. Hepperly

Rodale Institute

Thomas L. Potter

Cornell University

N. Marbán-Mendoza

Chapingo Autonomous University

B. M. Zuckerman

University of Massachusetts Amherst

T. E. Hewlett

University of Florida

Edmundo Rivera-Amador

University of Puerto Rico-Mayaguez

Ana E. Montalvo

B. M. Zuckerman

Gladstone Institutes

Cooperative Institutions

University of Massachusetts Amherst

Weizmann Institute of Science

University of Puerto Rico-Mayaguez

United States Department of Agriculture

Agricultural Research Service

Cornell University

Chapingo Autonomous University

Centro Agronomico Tropical de Investigacion y Ensenanza Catie

Colegio de Postgraduados

University of Florida

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Kinetics of thigmocurvature in two tendril‐bearing climbers

Plant Cell & Environment (1989)

C. M. Sean Carrington Joseph Esnard

Abstract. Growth of marked zones of watermelon and passion fruit tendrils was measured following brief thigmostimulation. In each case, curvature involved growth promotion on the non‐contact side of the tendril. Substantial shrinkage also occurred on the contact side of the passion fruit tendril but very little shrinkage took place in the watermelon tendril. Curvature was detected 10s and 1 min after the completion of stimulation in watermelon and passion fruit, respectively. The rapidity of this curvature argues against the mediation of the response by plant growth substances.

Tendril

Passion

Vine

10.1111/j.1365-3040.1989.tb01961.x

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Citations (3)

First report of southern blight of common barley in Puerto Rico

European Journal of Plant Pathology (1995)

Joseph Esnard Paul R. Hepperly

Wilting

Chlorosis

Stem rot

10.1007/bf01874473

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Citations (1)

Induction of Tetraploidy in the Tanier Cultivar ‘Inglesa’ [Xanthosoma saghtifolium (L.) Schott]

Plant Breeding (1993)

Joseph Esnard F. Ferwarda Edmundo Rivera-Amador Paul R. Hepperly

Abstract Induction of tetraploidy in commercial tanier was successfully achieved in vitro. Tissue cultures of a tanier [ Xanthosoma sagittifolium (L.) Schott cv. ‘In‐glesa’, 2n 26] were established and maintained on modified nutrient media containing various concentrations of MURASHIGE and SKOOG basal salts, vitamins, sucrose, BA and IAA or 2,4‐D. Cultures were exposed continuously for 8 days to 0, 12.5, 25 and 50 mg/1 colchicine incorporated in the media. The colchicine‐treated tissue cultures yielded di‐ploids (2n 26), tetraploids (2n 52) and aneuploids (2n – 2 24) respectively. The diploids produced on average one leaf and 4 suckers more per plant than the tetraploids, while plant height increased at about the same rate. Continuous exposure of tanier tissue cultures tocolchicine is an effective method for the production of synthetic tetraploids that may be hybridized with non‐commercial root rot‐resistant tetraploids.

Colchicine

Araceae

10.1111/j.1439-0523.1993.tb00651.x

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Citations (5)

Implications of sequencing the nematode Caenorhabditis elegans genome for plant methodology.

The Plant Health Instructor (2001)

Joseph Esnard

Caenorhabditis

10.1094/phi-i-2001-0328-01

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Citations (0)

European Journal of Plant Pathology (1998)

Joseph Esnard N. Marbán-Mendoza Bert M. Zuckerman

Radopholus similis

Helicotylenchus

Carbofuran

10.1023/a:1008638419552

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Citations (23)

Nobel Work at Massachusetts

Science News (1993)

Joseph Esnard

10.2307/3977458

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Citations (0)

Effects of Monoclonal Antibodies, Cationized Ferritin, and Other Organic Molecules on Adhesion of Pasteuria penetrans Endospores to Meloidogyne incognita.

PubMed (1997)

Joseph Esnard M. A. McClure Dennis W. Dickson T. E. Hewlett B. M. Zuckerman

The incidence of adhesion of Pasteuria penetrans endospores to Meloidogyne incognita second-stage juveniles (J2) was studied after pretreatment of the latter with monoclonal antibodies (MAb), cationized ferritin, and other organic molecules in replicated trials. Monoclonal antibodies developed to a cuticular epitope of M. incognita second-stage juveniles gave significant reductions in attachment of P. penetrans endospores to treated nematodes. MAb bound to the entire length of J2 except for the area of the lateral field, where binding was restricted to the incisures. Since reductions in attachment with MAb treatment were modest, it is uncertain if these results implicated a specific surface protein as a factor that interacted in binding of the endospore to the nematode cuticle. Endospore attachment was decreased following treatment of the nematode with the detergents sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB). Endospore attachment to live nematodes was significantly greater than attachment to dead nematodes. Attachment rates of three P. penetrans isolates to M. incognita race 3 varied between isolates. The effects of neuraminidase, pronase, pepsin, trypsin, lipase, and Na periodate on endospore attachment were inconsistent. The cationic dye alcian blue, which binds sulfate and carboxyl groups on acidic glycans, had no consistent effect on endospore attachment. The incidence of endospore attachment was significantly lower but modest, at best, for nematodes that were treated with cationized ferritin alone or cationized ferritin following monoclonal antibody. The lack of consistency or extreme reduction in most experiments suggests that attachment of P. penetrans spores to M. incognita is not specified by only one physico-chemical factor, but may involve a combination of at least two physico-chemical factors (including surface charge and movement of the J2). This points to a need for analysis of combined or factorial treatment effects.

Sodium dodecyl sulfate

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Citations (7)

Differentiation of six strains of Bacillus thuringiensis by hydrolyzable fatty acid composition

Journal of Agricultural and Food Chemistry (1994)

Joseph Esnard Thomas L. Potter Bert M. Zuckerman

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDifferentiation of six strains of Bacillus thuringiensis by hydrolyzable fatty acid compositionJoseph Esnard, Thomas L. Potter, and Bert M. ZuckermanCite this: J. Agric. Food Chem. 1994, 42, 5, 1251–1255Publication Date (Print):May 1, 1994Publication History Published online1 May 2002Published inissue 1 May 1994https://pubs.acs.org/doi/10.1021/jf00041a039https://doi.org/10.1021/jf00041a039research-articleACS PublicationsRequest reuse permissionsArticle Views84Altmetric-Citations4LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts

Bacillus thuringiensis

10.1021/jf00041a039

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Citations (7)

Reaction of Ten Cultivars of Watermelon (Citrullus lanatus) to a Puerto Rican population of Meloidogyne incognita.

PubMed (1994)

Ana E. Montalvo Joseph Esnard

Ten cultivars of watermelon were evaluated for their response to a Puerto Rican population of Meloidogyne incognita under greenhouse conditions in a 2-year study (1989 and 1990). Ten-day-old seedlings were planted in steam-sterilized soil in 15-cm-d plastic pots. The nematode inoculum consisted of 10,000 eggs and (or) second-stage juveniles (J2)/plant. The cultivars were Sugar Baby, Charleston Gray, Seedless, Prince Charles, Charleston 76, Jubilee, Florida Giant, Royal Charleston, Royal Sweet, and Royal Jubilee, with tomato cv. Rutgers included as a susceptible check. A completely randomized design with 10 replications was used. Fifty-five days after soil infestation, root-gall indices, numbers of nematode eggs per root system, and J2 per 250 cm(3) of soil were recorded. All cultivars were susceptible. Sugar Baby had the lowest root-gall index, egg and J2 numbers, and a reproductive factor (Rf) of 2.89. Rf differed (P

Citrullus lanatus

Citrullus

Root-knot nematode

Puerto rican

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Citations (26)

The Physiology and Biochemistry of Free-Living and Plant-Parasitic Nematodes. R. N. Perry , D. J. Wright

The Quarterly Review of Biology (2000)

Joseph Esnard

Wright

Experimental biology

10.1086/393309

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Citations (1)