Effects of a powder formulation of Streptomyces cameroonensis on growth and resistance of two cocoa hybrids from Cameroon against Phytophthora megakarya (Causal agent of black pod disease)

2021 ◽  
Author(s):  
Dzelamonyuy Aristide ◽  
Tene Tayo Paul Martial ◽  
Ngotcho Ngassam Esther Ruth ◽  
Lele Brenda Grace ◽  
Foka Tatiekam Ebenezer ◽  
...  
Keyword(s):  
Causal Agent ◽  
Powder Formulation ◽  
Black Pod ◽  
Phytophthora Megakarya ◽  
Black Pod Disease

NEP1 orthologs encoding necrosis and ethylene inducing proteins exist as a multigene family in Phytophthora megakarya, causal agent of black pod disease on cacao

2005 ◽  
Vol 109 (12) ◽  
pp. 1373-1385 ◽  
Author(s):  
Hanhong Bae ◽  
John H. Bowers ◽  
Paul W. Tooley ◽  
Bryan A. Bailey
Keyword(s):  
Multigene Family ◽  
Causal Agent ◽  
Black Pod ◽  
Phytophthora Megakarya ◽  
Black Pod Disease

scholarly journals Effect of extracts of Thevetia peruviana (Pers.) K.Schum on development of Phytophthora megakarya causal agent of black pod disease of cocoa

2014 ◽  
Vol 77 (0) ◽  
pp. 6564
Author(s):  
J P Ngoh Dooh ◽  
Z Ambang ◽  
N Bekolo ◽  
A Heu ◽  
W Kuate Tueguem
Keyword(s):  
Causal Agent ◽  
Thevetia Peruviana ◽  
Black Pod ◽  
Phytophthora Megakarya ◽  
Black Pod Disease

Comparative Toxicity of Copper – Based Fungicides against Phytophthora megakarya; a Causal Agent of Black Pod Disease of Cocoa

2018 ◽  
Vol 28 (4) ◽  
pp. 1-6
Author(s):  
D Adeniyi ◽  
A Adeji ◽  
O Kolawole ◽  
B Ogundeji ◽  
A Fadara
Keyword(s):  
Causal Agent ◽  
Comparative Toxicity ◽  
Black Pod ◽  
Phytophthora Megakarya ◽  
Black Pod Disease

scholarly journals Effect of extracts of Thevetia peruviana (Pers.) K.Schum on development of Phytophthora megakarya causal agent of black pod disease of cocoa

2014 ◽  
Vol 77 (1) ◽  
pp. 6564 ◽  
Author(s):  
J P Ngoh Dooh ◽  
Z Ambang ◽  
N Bekolo ◽  
A Heu ◽  
W Kuate Tueguem
Keyword(s):  
Causal Agent ◽  
Thevetia Peruviana ◽  
Black Pod ◽  
Phytophthora Megakarya ◽  
Black Pod Disease

Heritability of Phenols in the Resistance of Theobroma cacao against Phytophthora megakarya, the Causal Agent of Black Pod Disease

2007 ◽  
Vol 155 (9) ◽  
pp. 519-525 ◽  
Author(s):  
P. F. Djocgoue ◽  
T. Boudjeko ◽  
H. D. Mbouobda ◽  
D. J. Nankeu ◽  
I. El Hadrami ◽  
...  
Keyword(s):  
Theobroma Cacao ◽  
Causal Agent ◽  
Black Pod ◽  
Phytophthora Megakarya ◽  
Black Pod Disease

Field testing an oil-based Trichoderma asperellum formulation for the biological control of cacao black pod disease, caused by Phytophthora megakarya

2020 ◽  
Vol 132 ◽  
pp. 105134 ◽  
Author(s):  
J.B. Mbarga ◽  
B.A.D. Begoude ◽  
Z. Ambang ◽  
M. Meboma ◽  
J. Kuate ◽  
...  
Keyword(s):  
Biological Control ◽  
Field Testing ◽  
Trichoderma Asperellum ◽  
Black Pod ◽  
Phytophthora Megakarya ◽  
Black Pod Disease

scholarly journals Effect of MgSO4 nutrition on Theobroma cacao L. susceptibility to Phytophthora megakarya infection

2018 ◽  
Vol 54 (No. 2) ◽  
pp. 74-82
Author(s):  
Minyaka Emile ◽  
Banen Collette Vanessa Madina ◽  
Kusznierewicz Barbara ◽  
Doungous Oumar ◽  
Haouni Soungouna ◽  
...  
Keyword(s):  
Theobroma Cacao ◽  
Substantial Decrease ◽  
Asymptotic Line ◽  
New Strategy ◽  
Hyperbolic Curve ◽  
Cysteine Content ◽  
Black Pod ◽  
Phytophthora Megakarya ◽  
Black Pod Disease ◽  
Theobroma Cacao L

A new strategy to reduce the severity of black pod disease (BPD) in T. cacao plants using MgSO<sub>4</sub> nutrition was investigated. The dynamics of the tolerance to BPD of 18 susceptible T. cacao plantlets coming from the cross (♀SNK64 × ♂UPA14) was monitored during weekly (8 weeks) supply of MgSO<sub>4</sub> into the soil. Prior to MgSO<sub>4</sub> application, disease scores of the 18 plantlets (in six sets of three plantlets per set) were varying between 3.5 (susceptible) and 5 (highly susceptible). After MgSO<sub>4 </sub>application, a substantial decrease in disease scores was observed compared to the control. The percentage of disease tolerance gain of plantlets versus MgSO<sub>4</sub> supplied (0–2.96 g) presented a quasi-hyperbolic curve with asymptotic line corresponding to 60% (day 28) and 70% (day 56). Cysteine content was not significantly different between the six triplets before MgSO<sub>4 </sub>nutrition. On days 28 and 56 of MgSO<sub>4</sub> supplementation, cysteine content presented a pattern similar to the tolerance gain of plantlet sets. The monitoring of glutathione content versus MgSO<sub>4</sub> supplementation (compared to day 0) showed sigmoid (day 28) and hyperbolic (day 56) curves which were associated with defined mathematical laws determined by MALAB software. Negative and highly significant correlations were observed between disease scores, cysteine and glutathione contents in leaves while positive and highly significant correlations were observed between cysteine and glutathione contents in leaves. These data might mean that MgSO<sub>4</sub> nutrition significantly improved the tolerance of T. cacao. The mechanism of tolerance improvement might be associated with the synthesis of sulphur-containing compounds (cysteine and glutathione) which might be directly or indirectly used by T. cacao against P. megakarya.

Phytophthora megakarya, a Causal Agent of Black Pod Rot in Africa

2016 ◽  
pp. 267-303 ◽  
Author(s):  
Bryan A. Bailey ◽  
Shahin S. Ali ◽  
Andrews Y. Akrofi ◽  
Lyndel W. Meinhardt
Keyword(s):  
Causal Agent ◽  
Black Pod ◽  
Phytophthora Megakarya

scholarly journals Phosphates solubilizing bacteria like promoters agent of cocoa-tree growth and biocontrol of Phytophthora megakarya Brasier and M.J. Griffin, agent of black pod disease

2019 ◽  
Vol 11 (2) ◽  
pp. 8-21
Author(s):  
Sani Maryam ◽  
Claude Simo ◽  
Souleymanou Adamou ◽  
Hélène Laure Mafokoua ◽  
Tchakounte Gylaine Vanissa Tchuisseu ◽  
...  
Keyword(s):  
Tree Growth ◽  
Black Pod ◽  
Phytophthora Megakarya ◽  
Black Pod Disease ◽  
Cocoa Tree
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