Brown Root Rot Disease of Cashew in West Nusa Tenggara: Distribution and Its Causal Organism

Supriadi, Supriadi; Adhia, E.M.; Wahyuno, D.; Rahayuningsih, S.; Karyani, N.; Dahsyat, M.

doi:10.21082/ijas.v5n1.2004.32-36

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…Jamur akar coklat sangat sulit dideteksi sejak dini, seringkali diketahui serangan yang terlihat di lapangan sudah termasuk ke tahah yang parah yaitu daun mulai menguning, layu dan mudah rontok, serta akarnya menjadi membusuk, kering, rapuh dan mudah hancur. Akar yang terinfeksi JAC terlihat membesar dan diselimuti oleh butiran pasir dan tanah yang menempel sangat kuat, permukaan akar akan ditemukan rizomorf, pada kayu yang terifeksi tumbuh garis-garis coklat yang terdiri dari miselium (Semangun, 2000, Supriadi et al, 2004, Brooks et al, 2007.…”

Section: Pendahuluanunclassified

Eksplorasi Rizobakteri Indigenous Dan Uji Antagonis Terhadap Patogen Rigidoporus microporus Dan Phellinus noxius Pada Tanaman Karet (Hevea brasiliensis) Secara In Vitro

Murtadha

Ulim

Syamsuddin

2020

JIMFP

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Abstrak. Penelitian bertujuaan untuk mendapatkan isolat rizobakteri yang mampu berperan sebagai agens biokontrol terhadap pengendalian patogen R. microporus dan P. noxius secara in vitro serta sebagai agen rizobakteri pemacu pertumbuhan tanaman (RPPT). Penelitian dilaksanakan di Laboratorium Ilmu dan Teknologi Benih Jurusan Agroteknologi, Fakultas Pertanian, Universitas Syiah Kuala, Darussalam Banda Aceh, mulai Oktober sampai Desember 2017. Penelitian ini menggunakan Rancangan Acak Lengkap non faktorial. Faktor yang diteliti yaitu isolat rizobakteri, taraf yang dicobakan terdiri dari 15 isolat dan dua patogen antagonis R. microporus dan P. noxius, yang diulang sebanyak 3 kali sehingga terdapat 90 unit satuan percobaan. Hasil penelitian menunujukkan isolat rizobakteri mampu menekan pertumbuhan koloni cendawan patogen. Pada patogen uji R. microporus terdapat 3 rizobakteri yang paling baik yaitu isolat DLG5/3 dengan persentase penghambatan 68,33%, DLG4/1 dengan persentase penghambatan 66,66% dan DLG4/7 dengan persentase penghambatan 63,33%. Pada patogen uji P.noxius terdapat dua rizobakteri yang paling baik dalam menghambat pertumbuhan koloni cendawan patogen yaitu isolat DLG5/1 dengan persentase penghambatan 60,33%, dan DKP6/3 dengan persentase penghambatan 52,50%. Pada laju penghambatan isolat rizobakteri yang paling baik pada patogen R. microporus yaitu isolat DLG6/4 dan DKP4/1 dengan nilai rerata laju penghambatan 20,33 mm/hari. Pada patogen P. noxius menunjukan isolat rizobakteri yang paling baik yaitu isolat DLG4/1 dengan nilai laju penghambatan 12,05 mm/hari.Exploration of Indigenous Rizobacteria and Antagonistic Test against Patogen Rigidoporus microporus And Phellinus noxius In Rubber Plant (Hevea brasiliensis) In VitroAbstract. The research was conducted to obtain rhizobacteria isolates capable of acting as biocontrol agents on pathogen control of R. microporus and P. noxius in vitro and as plant growth promoter rhizobacteria (PGPR). The research was conducted at the Science and Technology of seed Laboratory, Department of Agrotechnology, Faculty of Agriculture, Syiah Kuala University, Darussalam Banda Aceh, starts from October to December 2017. The research using Completely Randomized Design non factorial. Factors researched were rhizobacteria isolates, the experimental stage consisted of 15 isolates and 2 antagonist were R. microporus dan P. noxius, and 3 time repeated until be found 90 units of treatment. The results showed that rhizobacteria isolates capable to inhibith growth of colonies pathogenic. In the pathogen of R. microporus test, there are 3 better rhizobacteria were DLG5/3 isolate with 68.33% inhibition percentage, DLG4/1 with 66.66% inhibition percentage and DLG4/7 with 63,33% inhibition percentage. In the pathogen of P. noxius there are 2 best rhizobacteria inhibiting growth, DLG5/1 isolate with 60.33% inhibition percentage, and DKP6/3 with 52,50% inhibition percentage. In the pathogen of R. microporus test, there are 2 better rhizobacteria were DLG6/4 and DKP4/1 with 20,33 mm/day inhibition percentage. In the pathogen of P. noxius test, the best rhizobacteria were DLG4/1 with 12,05 mm/day inhibition percentage.

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Section: Pendahuluanunclassified

Eksplorasi Rizobakteri Indigenous Dan Uji Antagonis Terhadap Patogen Rigidoporus microporus Dan Phellinus noxius Pada Tanaman Karet (Hevea brasiliensis) Secara In Vitro

Murtadha

Ulim

Syamsuddin

2020

JIMFP

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“…D espite favoring w oody t rees, P. noxius can also attack some herbaceous pl ants [2,5,6] . P. noxius has be en f ound i n many t ropical a nd s ubtropical c ountries and di stricts, including Singapore, Japan, Indonesia, Malaysia, Hai-T nan Island in China, Macao, Taiwan, Africa, Australia, Central America, and the Caribbean [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] . The wide geographical distribution of this pathogen and the severe da mage i t ha s caus ed have d rawn significant concerns.…”

Section: Introductionmentioning

confidence: 99%

Molecular diagnosis of the brown root rot disease agent Phellinus noxius on trees and in soil by rDNA ITS analysis

Wang¹,

Han²,

Gu³

et al. 2016

Appl Env Biotechnol

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“…Despite favoring woody trees, P. noxius can also attack some herbaceous plants [2,5,6] . P. noxius has been found in many tropical and subtropical countries and districts, including Singapore, Japan, Indonesia, Malaysia, Hai-T nan Island in China, Macao, Taiwan, Africa, Australia, Central America, and the Caribbean [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] . The wide geographical distribution of this pathogen and the severe damage it has caused have drawn significant concerns.…”

Section: Introductionmentioning

confidence: 99%

Molecular diagnosis of the brown root rot disease agent Phellinus noxius on trees and in soil by rDNA ITS analysis

Wang

Meng

Gu³

et al. 2016

Appl Env Biotechnol

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Phellinus noxius (P. noxius) is an important pathogen that causes brown root rot of trees in tropical and sub-tropical areas and has led to severe damage to trees. A quick and accurate diagnostic technique is essential to the timely confirmation of the pathogen and possible treatment. In this study, a fast, sensitive and accurate approach of molecular technique was used to diagnose the brown root rot pathogen on trees and in soils of subtropical Hong Kong. Two pairs of specific PCR primers were used to amplify the target rDNA internal transcribed spacer (ITS) region through polymerase chain reaction (PCR) for both tree tissues and soil samples. The amplified ITS fragments were then sequenced and analyzed phylogenetically for the diagnostic identification of the pathogen P. noxius. The results showed that 13 of 38 suspected trees in Hong Kong were infected with P. noxius through molecular detection. The pathogen showed no specific preference to any particular tree species. Quantitative PCR was applied to soils grown with trees identified both positive and negative for P. noxius, but the soils with healthy trees were also found positive for P. noxius. For the first time, P. noxius was reported to infect a wide range of tree species in Hong Kong and widely presented in soils, probably serving as a reservoir for the pathogen. Through this study, it is proposed that P. noxius is a soil-borne pathogen, which increases its infectivity when trees start to grow in the soil as a means in addition to the previously proposed root-to-root contact.

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Brown Root Rot Disease of Cashew in West Nusa Tenggara: Distribution and Its Causal Organism

Cited by 3 publications

References 7 publications

Eksplorasi Rizobakteri Indigenous Dan Uji Antagonis Terhadap Patogen Rigidoporus microporus Dan Phellinus noxius Pada Tanaman Karet (Hevea brasiliensis) Secara In Vitro

Eksplorasi Rizobakteri Indigenous Dan Uji Antagonis Terhadap Patogen Rigidoporus microporus Dan Phellinus noxius Pada Tanaman Karet (Hevea brasiliensis) Secara In Vitro

Molecular diagnosis of the brown root rot disease agent Phellinus noxius on trees and in soil by rDNA ITS analysis

Molecular diagnosis of the brown root rot disease agent Phellinus noxius on trees and in soil by rDNA ITS analysis

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