Field efficacy of chemical fungicides on rubber leaf fall disease (Corynespora cassiicola) in Central Vietnam

2019 ◽  
Vol 20 (3) ◽  
Keyword(s):  
Corynespora Cassiicola ◽  
Leaf Fall ◽  
Central Vietnam ◽  
Field Efficacy ◽  
Chemical Fungicides

scholarly journals Genomic Characteristics and Comparative Genomics Analysis of Two Chinese Corynespora cassiicola Strains Causing Corynespora Leaf Fall (CLF) Disease

2021 ◽  
Vol 7 (6) ◽  
pp. 485
Author(s):  
Boxun Li ◽  
Yang Yang ◽  
Jimiao Cai ◽  
Xianbao Liu ◽  
Tao Shi ◽  
...  
Keyword(s):  
Comparative Genomics ◽  
Single Molecule ◽  
Rubber Tree ◽  
Gene Families ◽  
Gene Clusters ◽  
The Philippines ◽  
Tree Plantations ◽  
Comparative Genomic ◽  
Corynespora Cassiicola ◽  
Leaf Fall

Rubber tree Corynespora leaf fall (CLF) disease, caused by the fungus Corynespora cassiicola, is one of the most damaging diseases in rubber tree plantations in Asia and Africa, and this disease also threatens rubber nurseries and young rubber plantations in China. C. cassiicola isolates display high genetic diversity, and virulence profiles vary significantly depending on cultivar. Although one phytotoxin (cassicolin) has been identified, it cannot fully explain the diversity in pathogenicity between C. cassiicola species, and some virulent C. cassiicola strains do not contain the cassiicolin gene. In the present study, we report high-quality gapless genome sequences, obtained using short-read sequencing and single-molecule long-read sequencing, of two Chinese C. cassiicola virulent strains. Comparative genomics of gene families in these two stains and a virulent CPP strain from the Philippines showed that all three strains experienced different selective pressures, and metabolism-related gene families vary between the strains. Secreted protein analysis indicated that the quantities of secreted cell wall-degrading enzymes were correlated with pathogenesis, and the most aggressive CCP strain (cassiicolin toxin type 1) encoded 27.34% and 39.74% more secreted carbohydrate-active enzymes (CAZymes) than Chinese strains YN49 and CC01, respectively, both of which can only infect rubber tree saplings. The results of antiSMASH analysis showed that all three strains encode ~60 secondary metabolite biosynthesis gene clusters (SM BGCs). Phylogenomic and domain structure analyses of core synthesis genes, together with synteny analysis of polyketide synthase (PKS) and non-ribosomal peptide synthetase (NRPS) gene clusters, revealed diversity in the distribution of SM BGCs between strains, as well as SM polymorphisms, which may play an important role in pathogenic progress. The results expand our understanding of the C. cassiicola genome. Further comparative genomic analysis indicates that secreted CAZymes and SMs may influence pathogenicity in rubber tree plantations. The findings facilitate future exploration of the molecular pathogenic mechanism of C. cassiicola.

scholarly journals Genome-Wide Analysis of Corynespora cassiicola Leaf Fall Disease Putative Effectors

2018 ◽  
Vol 9 ◽  
Author(s):  
David Lopez ◽  
Sébastien Ribeiro ◽  
Philippe Label ◽  
Boris Fumanal ◽  
Jean-Stéphane Venisse ◽  
...  
Keyword(s):  
Corynespora Cassiicola ◽  
Leaf Fall ◽  
Genome Wide Analysis ◽  
Genome Wide

scholarly journals PENGARUH POLA HARI HUJAN TERHADAP PERKEMBANGAN PENYAKIT GUGUR DAUN CORYNESPORA PADA TANAMAN KARET MENGHASILKAN

2011 ◽  
Vol 8 (1) ◽  
pp. 63-70
Author(s):  
Nurhayati Nurhayati ◽  
Aron Situmorang
Keyword(s):  
Disease Severity ◽  
Daily Rainfall ◽  
Rainfall Amount ◽  
Corynespora Cassiicola ◽  
Leaf Fall ◽  
Leaf Stage ◽  
Observation Period

Effect of weather on the development of leaf fall disease in the yielding rubber estate.  This research was conducted in  PTP VII Bergen Lampung  from  July  to August for 2005 and 2006 (new leaves period). This research was carried out using survey and experiment methods.  Parameters observed in the research were persentages of leaf stage, the number of leaf fall  per m2 caused by Corynespora cassiicola and amount of  spore distributed  in air, daily rainfall amount and number of rain days. Results of the study showed that  the pattern of rainfall  and number of raindays affected the development of plant’s new  leaves and  leaf fall disease caused by Corynespora.  The amount of spores distributed in the air was relatively higher in 2005 observation period compared to  2006 one.  The pattern of rainfall and number of rain days also affected the disease severity which was higher in 2005 compared to 2006. Epidemy  was occurred when lower rainfall amount  taking place intermittently with sunny days in the period of new leave formation.

Purification and characterization of cassiicolin, the toxin produced by Corynespora cassiicola, causal agent of the leaf fall disease of rubber tree

2007 ◽  
Vol 849 (1-2) ◽  
pp. 357-362 ◽  
Author(s):  
Frédéric de Lamotte ◽  
Marie-Pierre Duviau ◽  
Christine Sanier ◽  
Robert Thai ◽  
Joël Poncet ◽  
...  
Keyword(s):  
Rubber Tree ◽  
Causal Agent ◽  
Corynespora Cassiicola ◽  
Leaf Fall ◽  
Purification And Characterization

scholarly journals Selection of Phylloplane and Endophyte Microbes as Biocontrol for Rubber Leaf Fall Disease (Corynespora cassiicola)

2018 ◽  
Vol 5 (3) ◽  
pp. 113
Author(s):  
Khaerati Khaerati ◽  
Yulius Ferry ◽  
Rusli Rusli
Keyword(s):  
Inhibition Mechanism ◽  
Corynespora Cassiicola ◽  
Leaf Fall ◽  
Bacterial Isolates ◽  
West Kalimantan ◽  
Inhibitory Analysis ◽  
Phylloplane Fungi ◽  
Inhibitory Power ◽  
Yield Decrease ◽  
Selection Of

<p><em>Leaf fall disease in rubber caused by </em>Corynespora cassiicola<em> </em><em>fungi significantly decreases rubber productivity. </em>C. cassiicola<em> causes leaves to fall all year round</em><em>,  a delay in the tapping of immature rubber  plants, yield decrease of producing plants, and even death of susceptible clones.  The study aimed to obtain phylloplane and endophytic microbes potentially to inhibit the disease, was conducted from January to December 2016. The study used randomized complete design to assess antagonistic fungi and phylloplane and endophytic bacterias toward </em>C. cassiicola<em> in isolates obtained through exploration in </em><em>West Java and West Kalimantan. Pathogen isolation showed </em>Corynespora sp<em> with pale brown color, single conidia which slightly bended, shaped like a stick that is swollen at the base, with 2–14 septa.  Inhibitory analysis found 42 fungi isolates and 19 bacteria isolates potentially inhibiting </em>C. cassiicola<em>. </em><em>Six fungi isolates have an inhibitory ability of ≥90%, consisting of two phylloplane fungi isolates (DTJF11 and CPSR7) and four endophytic fungi (CEBPM15, CEBPM23, CEBPM27, and CEPR9) with lysis, mycoparasitism, competition, and antibiosis inhibitory mechanism. The identification showed fungi isolate of DTJF11 is classified as  </em>Trichoderma asperellum<em>, CPSR7 as </em>Talaromyces pinophilus<em>, and CEBPM15</em><em> as </em>Amanita tenuifolia<em>.  </em><em>Potential bacterial isolates as biological agents are BP7, L3, BP3, BP4, BP5 and BP6 isolates, which have inhibitory power of 28.54%–40.94%, with antibiosis inhibition mechanism.</em></p>

scholarly journals KISARAN INANG Corynespora cassiicola (Berk. & Curt) Wei PADA TANAMAN DI SEKITAR PERTANAMAN KARET (Hevea brassiliensis Muell)

2017 ◽  
Vol 4 (1) ◽  
pp. 9-19
Author(s):  
Suryani Sajar
Keyword(s):  
Host Range ◽  
Weed Control ◽  
Sweet Potato ◽  
Rubber Plantation ◽  
Mixed Cropping ◽  
Corynespora Cassiicola ◽  
Leaf Fall ◽  
Incubation Periods ◽  
Resistant Rubber ◽  
Important Disease

Leaf fall disease caused by Corynespora cassiicola is the most important disease in a rubber plantation. Thedisruption will decrease the productivity, delaying on grafting in a nursery and hard attack will flaw the seed,stunted and even dead. Curative prevention on old crop need huge expenses with uncertain result, hence it isnecessary to understand the host range of C. cassiicola completed with its cultural characteristics to utilizedin disease preventions such as intercropping and mixed cropping recommendation for weed control action.This study aims to obtain plants that are host of C. cassiicola. This research showed that isolate of C. cassiicolafrom clone GT1 of rubber infected 12 plants from 16 tested plants in various incubation periods which were:cucumber, soybean, alamanda, papaya, cassava, babadotan, sweet potato, tapak dara, peanuts, asystasia,mucuna, and RRIM 600. Pathogenicity examination showed 5 resistence degree, which were: resistant(babadotan, lulangan weed, sweet potato, mucuna, lantana, asystasia, spinach torm and sembung rambat) ;slightly resistant (rubber, peanuts, alamanda and tapak dara) ; moderate (soybean and papaya) ; slightlysusceptible (cassava) and susceptible (cucumber).

scholarly journals Three new pathogens infecting antilles cherry in the State of Pará

2003 ◽  
Vol 28 (4) ◽  
pp. 424-426 ◽  
Author(s):  
Luiz S. Poltronieri ◽  
Maria L. R. Duarte ◽  
Acelino C. Alfenas ◽  
Dinaldo R. Trindade ◽  
Fernando C. Albuquerque
Keyword(s):  
Leaf Spot ◽  
Amazon Region ◽  
The State ◽  
Corynespora Cassiicola ◽  
Leaf Fall ◽  
Calonectria Ilicicola ◽  
Leaf Spots ◽  
Cylindrocladium Parasiticum ◽  
Pathogenicity Tests ◽  
Myrothecium Roridum

When grown in monoculture, Antilles cherry (Malpighia glabra) plants have been affected by diseases which cause fruits malformation and spotting, reducing their value for market. From 1999 on, three new diseases characterised by leaf spot and fall of leaves have been observed in plantations located in Santa Izabel do Pará and Igarapé Açu counties. After isolation and pathogenicity tests on leaves of Antilles cherry plants, the isolates were identified as Calonectria ilicicola (anamorph: Cylindrocladium parasiticum) which causes large leaf spots reaching up to 7 cm long, brownish in colour, coalescent, scorching large leaf areas and causing 50% of leaf fall; Corynespora cassiicola, which provokes irregularly shaped, necrotic leaf spots with dark brown margins and white centers, surrounded by a yellow halo; and Myrothecium roridum which causes greyish target spots. Corynespora cassiicola has been reported causing leaf spots on different hosts in the Amazon region, while C. cassiicola has been recorded infecting Antilles cherry besides other hosts in the States of Maranhão and Pará.

scholarly journals Evaluation De L’efficacité De Fongicides Au Laboratoire Contre Corynespora Cassiicola, Agent Causal De La Maladie « Corynespora Leaf Fall » De L’hévéa En Côte d’Ivoire

2018 ◽  
Vol 14 (18) ◽  
pp. 340
Author(s):  
Yao Kouakou Alban Prosper ◽  
Wahounou Polié Jean ◽  
Diallo Atta Hortense
Keyword(s):  
Copper Oxide ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Corynespora Cassiicola ◽  
Leaf Fall ◽  
Cote D’Ivoire ◽  
Rubber Production ◽  
Côte D'ivoire ◽  
High Level

Corynespora leaf fall disease (CLFD) caused by Corynespora cassiicola is increasingly a major problem for the development of rubber production in Côte d'Ivoire. In the search for solutions to this problem, the efficacy of 11 fungicides (Azoxystrobin, Carbendazime + Chlorothalonil, Carbendazime, Chlorothalonil, Difenoconazole, Fosetyl-Aluminum, Iprodione, Mancozeb, Metalaxyl + Copper Oxide, Pyraclostrobin + Fenpropimorph, Triadimefon) was laboratory tested against an isolate of C. cassiicola. The results of this test showed a high level of efficacy of four fungicides, Iprodione, Carbendazime + Chlorothalonil, Carbendazim and Pyraclostrobin + Fenpropimorph. The use of these four fungicides formulations in mature plantation would be well indicated, to overcome this foliar pathology.

scholarly journals KETAHANAN ENAM KLON KARET TERHADAP INFEKSI CORYNESPORA CASSIICOLA PENYEBAB PENYAKIT GUGUR DAUN

2010 ◽  
Vol 10 (1) ◽  
pp. 47-51
Author(s):  
Nurhayati Nurhayati ◽  
Fatma Fatma ◽  
M. Idrus Aminuddin
Keyword(s):  
Block Design ◽  
Corynespora Cassiicola ◽  
Leaf Fall ◽  
Pathogen Infection ◽  
Green House ◽  
Randomized Block Design ◽  
Plant Pest ◽  
Department Faculty

Resistance of six rubber clones to Corynespora cassiicola the pathogen of rubber leaf fall disease.   The objectives of the research was to evaluate the resistance of six rubber clones to Corynespora cassiicola, the pathogen of rubber leaf fall disease.  The research was conducted at Phytophatology laboratorium and green house at the Plant Pest and Diseases Department, Faculty of Agriculture, Sriwijaya University, from March to July 2008.  The treatments were arranged in a completely randomized block design (CRBD) with six treatments and four replications.  Each replication consisted of four polibags of rubber plants.   The clons tested were  GT 1, PB 260, IRR 39, BPM 1, BPM 24 and PR 261.  The results showed that  IRR 39 was the most susceptible clon to C. cassiicola infection, whereas disease severety reach up to 98.45 % and leaf fall 73.95 %.  Clon PB 260 show as the moderat resistance clon to the pathogen infection. The severity disease of  this clon only 41.53 % and leaf fall 10.41%. 

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