Root hair infection by Plasmodiophora brassicae in clubrootresistant and susceptible genotypes of Brassica oleracea, B. rapa and B. napus

1992 ◽  
Vol 98 (6) ◽  
pp. 361-368 ◽  
Author(s):  
Roeland E. Voorrips
Keyword(s):  
Brassica Oleracea ◽  
Root Hair ◽  
Plasmodiophora Brassicae ◽  
Root Hair Infection

scholarly journals Influence of cultivar resistance and inoculum density on root hair infection of canola (Brassica napus) by Plasmodiophora brassicae

2011 ◽  
Vol 60 (5) ◽  
pp. 820-829 ◽  
Author(s):  
S. F. Hwang ◽  
H. U. Ahmed ◽  
Q. Zhou ◽  
S. E. Strelkov ◽  
B. D. Gossen ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Root Hair ◽  
Plasmodiophora Brassicae ◽  
Inoculum Density ◽  
Cultivar Resistance ◽  
Root Hair Infection

EVALUATION OF NONIONIC SURFACTANTS FOR CONTROL OF CLUBROOT OF CABBAGE USING BAREROOT AND PLUG TRANSPLANTS OF TWO CULTIVARS

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 607b-607
Author(s):  
W. Tietjen ◽  
P.J. Nitzsche ◽  
W.P. Cowgill ◽  
M.H. Maletta ◽  
S.A. Johnston
Keyword(s):  
Brassica Oleracea ◽  
Disease Severity ◽  
Nonionic Surfactants ◽  
Plasmodiophora Brassicae ◽  
Severity Index ◽  
Effective Control ◽  
Disease Severity Index

`Market Prize' and `Bravo' cabbage (Brassica oleracea Var. capitata L.), transplanted as peat plug and bareroot plants into a field naturally infested with Plasmodiophora brassicae, Woronin, were treated immediately after planting with a liquid or a granular surfactant. APSA 80™, applied in transplant water, significantly reduced percent clubbing and disease severity index (DSI) compared to control treatments. Miller Soil Surfactant Granular™ did not significantly reduce percent clubbing or DSI. There was a significant effect of cultivar on percent clubbing and DSI. There was no significant effect of transplant type on percent clubbing or DSI. This year's study culminates five years of investigation of surfactants for clubroot control. Specific surfactants have proven to be an effective control of clubroot in cabbage. Chemical names used: nonylphenoxypolyethoxyethanol (APSA 80™); alpha-alkanoic-hydro omega-hydroxy poly (oxyethylene) (Miller Soil Surfactant Granular™).

Glycine max NNL1 restricts symbiotic compatibility with widely distributed bradyrhizobia via root hair infection

Nature Plants ◽  
2021 ◽  
Vol 7 (1) ◽  
pp. 73-86
Author(s):  
Bao Zhang ◽  
Mengdi Wang ◽  
Yifang Sun ◽  
Peng Zhao ◽  
Chang Liu ◽  
...  
Keyword(s):  
Glycine Max ◽  
Root Hair ◽  
Root Hair Infection

scholarly journals Publisher Correction: Glycine max NNL1 restricts symbiotic compatibility with widely distributed bradyrhizobia via root hair infection

Nature Plants ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 239-239
Author(s):  
Bao Zhang ◽  
Mengdi Wang ◽  
Yifang Sun ◽  
Peng Zhao ◽  
Chang Liu ◽  
...  
Keyword(s):  
Glycine Max ◽  
Root Hair ◽  
Root Hair Infection

The life history of Plasmodiophora brassicae Woron

1972 ◽  
Vol 180 (1058) ◽  
pp. 103-112 ◽  
Keyword(s):  
Life History ◽  
Root Hair ◽  
Plasmodiophora Brassicae ◽  
Root Hairs ◽  
Secondary Phase ◽  
Tissue Cultures ◽  
Resting Spore ◽  
Resting Spores ◽  
Seedling Roots ◽  
History Of

Resting spore germination and the root hair stages of the life history of Plasmodiophora brassicae were studied in stained preparations of infected Brassica rapa seedling roots. Naked protoplasts, usually possessing two unequal flagella, were released from resting spores through a small circular pore. They penetrated the root hairs of B. rapa and there developed into plasmodia which, after becoming multinucleate, cleaved to form zoosporangia con­taining incipient zoospores. Biflagellate zoospores were released from root hair zoosporangia and fused in pairs, although karyogamy did not occur. The resulting binucleate zoospores infected the cortical dells of B. rapa to form binucleate plasmodia, the earliest stages of the secondary phase of the life history. These findings are discussed in relation to previous studies on the life history of P. brassicae in Brassica plants and in Brassica tissue cultures, and a new complete life history, including nuclear fusion in the secondary plasmodium, is suggested for the organism.

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