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Gilbert Miller - One of the best experts on this subject based on the ideXlab platform.
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host resistance and metam sodium for managing root knot nematodes in a pepper cucumber rotation
Hortscience, 2005Co-Authors: Judy A Thies, Richard L. Fery, Richard F Davis, David B Langston, J.d. Mueller, Gilbert MillerAbstract:Root-knot nematode-resistant 'Charleston Belle' bell pepper (Capsicum annuum L. var. annuum) and metam sodium treatment were evaluated for managing the southern root-knot nematode Me!oidogj'ne incognita (Chitwood) Kofoid and Whitel in fall-cropped cucumber (Cucumis sativus L.). 'Charleston Belle' and its susceptible recurrent parent, 'Keystone Resistant Giant', were planted as spring crops at Blackville, S.C., and Tifton, Ga. 'Charleston Belle' exhibited high resistance and 'Keystone Resistant Giant' was sus- ceptible at both locations. After termination of the bell pepper crop, one-half of the plots were treated with metam sodium delivered through the drip irrigation system. Cucumber yields and numbers of fruit were highest for cucumber grown in plots treated with metam sodium following either 'Charleston Belle' or 'Keystone Resistant Giant'; however, root Gall severity and numbers of M. incognita eggs in the roots were lowest for cucumber grown in plots treated with metam sodium following 'Charleston Belle'. Conversely, root Gall severity and nematode reproduction were highest for cucumber grown in plots following 'Keystone Resistant Giant' without metam sodium treatment. Application of metam sodium through the drip irrigation system following a spring crop of root-knot nematode-resistant bell pepper should reduce severity of root Galling and reproduction of M. incognita as well as increase fruit yield of fall-cropped cucumber.
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Double-Cropping Cucumbers and Squash After Resistant Bell Pepper for Root-Knot Nematode Management
Plant Disease, 2004Co-Authors: Judy A Thies, Richard L. Fery, Richard F Davis, David B Langston, J.d. Mueller, Gilbert MillerAbstract:'Charleston Belle', a root-knot nematode-resistant pepper (Capsicum annuum var. annuum [Grossum Group]), and its susceptible recurrent parent, 'Keystone Resistant Giant', were compared as spring crops for managing the southern root-knot nematode (Meloidogyne incognita) in fall-cropped cucumber (Cucumis sativus) and squash (Cucurbita pepo) at Blackville, SC and Tifton, GA. 'Charleston Belle' exhibited minimal root Galling and nematode reproduction, and 'Keystone Resistant Giant' exhibited severe root Galling and high nematode reproduction. Cucumber grown in plots following 'Charleston Belle' had lower (P ≤ 0.001) root Gall severity indices than following 'Keystone Resistant Giant' (4.2 versus 4.9, respectively). Cucumber yields were 87% heavier (P ≤ 0.0001) and numbers of fruit were 85% higher (P ≤ 0.0001) in plots previously planted to 'Charleston Belle' than to 'Keystone Resistant Giant'. Squash grown in plots following 'Charleston Belle' had lower (P ≤ 0.001) root Gall severity indices than following 'Keystone Resistant Giant' (4.0 versus 4.8, respectively). Squash yields were 55% heavier (P ≤ 0.01) and numbers of fruit were 50% higher (P ≤ 0.001) in plots previously planted to 'Charleston Belle' than to 'Keystone Resistant Giant'. These results demonstrate that root-knot nematode-resistant bell pepper cultivars such as 'Charleston Belle' are useful tools for managing M. incognita in double-cropping systems with cucurbit crops.
Judy A Thies - One of the best experts on this subject based on the ideXlab platform.
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host resistance and metam sodium for managing root knot nematodes in a pepper cucumber rotation
Hortscience, 2005Co-Authors: Judy A Thies, Richard L. Fery, Richard F Davis, David B Langston, J.d. Mueller, Gilbert MillerAbstract:Root-knot nematode-resistant 'Charleston Belle' bell pepper (Capsicum annuum L. var. annuum) and metam sodium treatment were evaluated for managing the southern root-knot nematode Me!oidogj'ne incognita (Chitwood) Kofoid and Whitel in fall-cropped cucumber (Cucumis sativus L.). 'Charleston Belle' and its susceptible recurrent parent, 'Keystone Resistant Giant', were planted as spring crops at Blackville, S.C., and Tifton, Ga. 'Charleston Belle' exhibited high resistance and 'Keystone Resistant Giant' was sus- ceptible at both locations. After termination of the bell pepper crop, one-half of the plots were treated with metam sodium delivered through the drip irrigation system. Cucumber yields and numbers of fruit were highest for cucumber grown in plots treated with metam sodium following either 'Charleston Belle' or 'Keystone Resistant Giant'; however, root Gall severity and numbers of M. incognita eggs in the roots were lowest for cucumber grown in plots treated with metam sodium following 'Charleston Belle'. Conversely, root Gall severity and nematode reproduction were highest for cucumber grown in plots following 'Keystone Resistant Giant' without metam sodium treatment. Application of metam sodium through the drip irrigation system following a spring crop of root-knot nematode-resistant bell pepper should reduce severity of root Galling and reproduction of M. incognita as well as increase fruit yield of fall-cropped cucumber.
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Double-Cropping Cucumbers and Squash After Resistant Bell Pepper for Root-Knot Nematode Management
Plant Disease, 2004Co-Authors: Judy A Thies, Richard L. Fery, Richard F Davis, David B Langston, J.d. Mueller, Gilbert MillerAbstract:'Charleston Belle', a root-knot nematode-resistant pepper (Capsicum annuum var. annuum [Grossum Group]), and its susceptible recurrent parent, 'Keystone Resistant Giant', were compared as spring crops for managing the southern root-knot nematode (Meloidogyne incognita) in fall-cropped cucumber (Cucumis sativus) and squash (Cucurbita pepo) at Blackville, SC and Tifton, GA. 'Charleston Belle' exhibited minimal root Galling and nematode reproduction, and 'Keystone Resistant Giant' exhibited severe root Galling and high nematode reproduction. Cucumber grown in plots following 'Charleston Belle' had lower (P ≤ 0.001) root Gall severity indices than following 'Keystone Resistant Giant' (4.2 versus 4.9, respectively). Cucumber yields were 87% heavier (P ≤ 0.0001) and numbers of fruit were 85% higher (P ≤ 0.0001) in plots previously planted to 'Charleston Belle' than to 'Keystone Resistant Giant'. Squash grown in plots following 'Charleston Belle' had lower (P ≤ 0.001) root Gall severity indices than following 'Keystone Resistant Giant' (4.0 versus 4.8, respectively). Squash yields were 55% heavier (P ≤ 0.01) and numbers of fruit were 50% higher (P ≤ 0.001) in plots previously planted to 'Charleston Belle' than to 'Keystone Resistant Giant'. These results demonstrate that root-knot nematode-resistant bell pepper cultivars such as 'Charleston Belle' are useful tools for managing M. incognita in double-cropping systems with cucurbit crops.
Yoshihito Suzuki - One of the best experts on this subject based on the ideXlab platform.
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phytohormones in japanese mugwort Gall induction by a Gall inducing Gall midge
Bioscience Biotechnology and Biochemistry, 2013Co-Authors: Yuichiro Tanaka, Koichi Okada, Tadao Asami, Yoshihito SuzukiAbstract:A variety of insect species induce Galls on host plants. Liquid chromatographic/tandem mass spectrometric analyses showed that a Gall midge (Rhopalomyia yomogicola) that induces Galls on Artemisia princeps contained high levels of indole-3-acetic acid and cytokinins. The Gall midge larvae also synthesized indole-3-acetic acid from tryptophan. Close observation of Gall tissue sections indicated that the larval chamber was surrounded by layers of cells having secondary cell walls with extensive lignin deposition, except for the part of the Gall that constituted the feeding nutritive tissue which was composed of small cells negatively stained for lignin. The differences between these two types of tissue were confirmed by an expression analysis of the genes involved in the synthesis of the secondary cell wall. Phytohormones may have functioned in maintaining the feeding part of the Gall as fresh nutritive tissue. Together with the results in our previous study, those presented here suggest the importance of phytohormones in Gall induction.
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phytohormones and willow Gall induction by a Gall inducing sawfly
New Phytologist, 2012Co-Authors: Hiroki Yamaguchi, Tadao Asami, Makoto Tokuda, Hiroki Tanaka, Morifumi Hasegawa, Yoshihito SuzukiAbstract:Summary A variety of insect species induce Galls on host plants. Several studies have implicated phytohormones in insect-induced Gall formation. However, it has not been determined whether insects can synthesize phytohormones. It has also never been established that phytohormones function in Gall tissues. Liquid chromatography and tandem mass spectrometry (LC/MS/MS) were used to analyse concentrations of endogenous cytokinins and the active auxin IAA in the Gall-inducing sawfly (Pontania sp.) and its host plant, Salix japonica. Feeding experiments demonstrated the ability of sawfly larvae to synthesize IAA from tryptophan. Gene expression analysis was used to characterize hormonal signalling in Galls. Sawfly larvae contain high concentrations of IAA and t-zeatin, and produce IAA from tryptophan. The glands of adult sawflies, the contents of which are injected into leaves upon oviposition and are involved in the initial stages of Gall formation, contain an extraordinarily high concentration of t-zeatin riboside. Transcript levels of some auxin- and cytokinin-responsive genes are significantly higher in Gall tissue than in leaves. The abnormally high concentration of t-zeatin riboside in the glands strongly suggests that the sawfly can synthesize cytokinins as well as IAA. Gene expression profiles indicate high levels of auxin and cytokinin activities in growing Galls.
Richard L. Fery - One of the best experts on this subject based on the ideXlab platform.
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host resistance and metam sodium for managing root knot nematodes in a pepper cucumber rotation
Hortscience, 2005Co-Authors: Judy A Thies, Richard L. Fery, Richard F Davis, David B Langston, J.d. Mueller, Gilbert MillerAbstract:Root-knot nematode-resistant 'Charleston Belle' bell pepper (Capsicum annuum L. var. annuum) and metam sodium treatment were evaluated for managing the southern root-knot nematode Me!oidogj'ne incognita (Chitwood) Kofoid and Whitel in fall-cropped cucumber (Cucumis sativus L.). 'Charleston Belle' and its susceptible recurrent parent, 'Keystone Resistant Giant', were planted as spring crops at Blackville, S.C., and Tifton, Ga. 'Charleston Belle' exhibited high resistance and 'Keystone Resistant Giant' was sus- ceptible at both locations. After termination of the bell pepper crop, one-half of the plots were treated with metam sodium delivered through the drip irrigation system. Cucumber yields and numbers of fruit were highest for cucumber grown in plots treated with metam sodium following either 'Charleston Belle' or 'Keystone Resistant Giant'; however, root Gall severity and numbers of M. incognita eggs in the roots were lowest for cucumber grown in plots treated with metam sodium following 'Charleston Belle'. Conversely, root Gall severity and nematode reproduction were highest for cucumber grown in plots following 'Keystone Resistant Giant' without metam sodium treatment. Application of metam sodium through the drip irrigation system following a spring crop of root-knot nematode-resistant bell pepper should reduce severity of root Galling and reproduction of M. incognita as well as increase fruit yield of fall-cropped cucumber.
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Double-Cropping Cucumbers and Squash After Resistant Bell Pepper for Root-Knot Nematode Management
Plant Disease, 2004Co-Authors: Judy A Thies, Richard L. Fery, Richard F Davis, David B Langston, J.d. Mueller, Gilbert MillerAbstract:'Charleston Belle', a root-knot nematode-resistant pepper (Capsicum annuum var. annuum [Grossum Group]), and its susceptible recurrent parent, 'Keystone Resistant Giant', were compared as spring crops for managing the southern root-knot nematode (Meloidogyne incognita) in fall-cropped cucumber (Cucumis sativus) and squash (Cucurbita pepo) at Blackville, SC and Tifton, GA. 'Charleston Belle' exhibited minimal root Galling and nematode reproduction, and 'Keystone Resistant Giant' exhibited severe root Galling and high nematode reproduction. Cucumber grown in plots following 'Charleston Belle' had lower (P ≤ 0.001) root Gall severity indices than following 'Keystone Resistant Giant' (4.2 versus 4.9, respectively). Cucumber yields were 87% heavier (P ≤ 0.0001) and numbers of fruit were 85% higher (P ≤ 0.0001) in plots previously planted to 'Charleston Belle' than to 'Keystone Resistant Giant'. Squash grown in plots following 'Charleston Belle' had lower (P ≤ 0.001) root Gall severity indices than following 'Keystone Resistant Giant' (4.0 versus 4.8, respectively). Squash yields were 55% heavier (P ≤ 0.01) and numbers of fruit were 50% higher (P ≤ 0.001) in plots previously planted to 'Charleston Belle' than to 'Keystone Resistant Giant'. These results demonstrate that root-knot nematode-resistant bell pepper cultivars such as 'Charleston Belle' are useful tools for managing M. incognita in double-cropping systems with cucurbit crops.
Richard F Davis - One of the best experts on this subject based on the ideXlab platform.
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host resistance and metam sodium for managing root knot nematodes in a pepper cucumber rotation
Hortscience, 2005Co-Authors: Judy A Thies, Richard L. Fery, Richard F Davis, David B Langston, J.d. Mueller, Gilbert MillerAbstract:Root-knot nematode-resistant 'Charleston Belle' bell pepper (Capsicum annuum L. var. annuum) and metam sodium treatment were evaluated for managing the southern root-knot nematode Me!oidogj'ne incognita (Chitwood) Kofoid and Whitel in fall-cropped cucumber (Cucumis sativus L.). 'Charleston Belle' and its susceptible recurrent parent, 'Keystone Resistant Giant', were planted as spring crops at Blackville, S.C., and Tifton, Ga. 'Charleston Belle' exhibited high resistance and 'Keystone Resistant Giant' was sus- ceptible at both locations. After termination of the bell pepper crop, one-half of the plots were treated with metam sodium delivered through the drip irrigation system. Cucumber yields and numbers of fruit were highest for cucumber grown in plots treated with metam sodium following either 'Charleston Belle' or 'Keystone Resistant Giant'; however, root Gall severity and numbers of M. incognita eggs in the roots were lowest for cucumber grown in plots treated with metam sodium following 'Charleston Belle'. Conversely, root Gall severity and nematode reproduction were highest for cucumber grown in plots following 'Keystone Resistant Giant' without metam sodium treatment. Application of metam sodium through the drip irrigation system following a spring crop of root-knot nematode-resistant bell pepper should reduce severity of root Galling and reproduction of M. incognita as well as increase fruit yield of fall-cropped cucumber.
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Double-Cropping Cucumbers and Squash After Resistant Bell Pepper for Root-Knot Nematode Management
Plant Disease, 2004Co-Authors: Judy A Thies, Richard L. Fery, Richard F Davis, David B Langston, J.d. Mueller, Gilbert MillerAbstract:'Charleston Belle', a root-knot nematode-resistant pepper (Capsicum annuum var. annuum [Grossum Group]), and its susceptible recurrent parent, 'Keystone Resistant Giant', were compared as spring crops for managing the southern root-knot nematode (Meloidogyne incognita) in fall-cropped cucumber (Cucumis sativus) and squash (Cucurbita pepo) at Blackville, SC and Tifton, GA. 'Charleston Belle' exhibited minimal root Galling and nematode reproduction, and 'Keystone Resistant Giant' exhibited severe root Galling and high nematode reproduction. Cucumber grown in plots following 'Charleston Belle' had lower (P ≤ 0.001) root Gall severity indices than following 'Keystone Resistant Giant' (4.2 versus 4.9, respectively). Cucumber yields were 87% heavier (P ≤ 0.0001) and numbers of fruit were 85% higher (P ≤ 0.0001) in plots previously planted to 'Charleston Belle' than to 'Keystone Resistant Giant'. Squash grown in plots following 'Charleston Belle' had lower (P ≤ 0.001) root Gall severity indices than following 'Keystone Resistant Giant' (4.0 versus 4.8, respectively). Squash yields were 55% heavier (P ≤ 0.01) and numbers of fruit were 50% higher (P ≤ 0.001) in plots previously planted to 'Charleston Belle' than to 'Keystone Resistant Giant'. These results demonstrate that root-knot nematode-resistant bell pepper cultivars such as 'Charleston Belle' are useful tools for managing M. incognita in double-cropping systems with cucurbit crops.
