Delignification pattern of wood decay by white rot fungi in teak (Tectona grandis L. f.)

Nagadesi, Praveen Kumar; Arya, Arun; Albert, Susy

doi:10.1007/s13196-013-0085-8

Cited by 13 publications

(9 citation statements)

References 13 publications

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“…The chemical analysis decayed wood showed highest delignification (i.e. Loss of Klason lignin) up to 84.71 % by L. stereoides in teak wood (20) but in the present study showed delignification up to 50.4 % only by L. stereoides in teak wood, but highest amount of delignification was shown by H. apiaria.…”

Section: Artificially Infected Wood Plankscontrasting

confidence: 80%

Delignification of Valuable Timbers Decayed by India Lignicolous Fungi

Nagadesi

Arya

2014

ILNS

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ABATRACTWood degrading capacity of lignicolous fungi was studied by decay test. In which two methods were followed, i) wood chips method ii) wood block method. Eight timbers infected by six fungi were selected for studying percentage of decay and biochemical test was done to know delignification. After 12 months, 90 % of wood block of T. arjuna was decayed by L. stereoides. In teak wood 16.82 % of decay was due to H. apiaria in 3 months. As the percentage of moisture was less, percentage of weight loss was also less; this indicated that decay capacity of fungi will depends on % moisture content in wood. The percentage loss in hot water soluble substrates was more in case of T. crenulata due to L. stereoides for 5 months, whereas lowest in case of teak wood decayed by H. apiaria for 5 months. The percentage loss in ethanol benzene soluble substrate was more in case of Adina wood decayed by C. versicolor for 5 months, whereas lowest in case of teak wood infected with L. stereoides for 3 months. As the incubation period increases, percentage loss in acid soluble lignin was more in case of infected woods. L. stereoides, C. versicolor, and H. apiaria showed selective delignification in all infected woods, whereas T. pini showed simultaneous degradation of lignin in all woods tested. The valuable timber like teak wood was not resistant to wood decay because they loss 50% of lignin. The in vitro wood decay test can't be taken as absolute evidence for wood decay behavior of lignin-degrading fungi, so we should conform decay of wood by consider biochemical test. For rapid evaluation of wood decay the wood chip method was best suitable. For the first time the wood decay and biochemical test of 8 wood samples infected by white rot fungi like S. commune, L. stereoides, H. apiaria, C. versicolor, T. pini and soft rot fungi like T. viride was studied.

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Section: Artificially Infected Wood Plankscontrasting

confidence: 80%

Delignification of Valuable Timbers Decayed by India Lignicolous Fungi

Nagadesi

Arya

2014

ILNS

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“…Estudios previos han señalado que la actividad antifúngica y protectora de los extractos del duramen de H. serratifolius y T. grandis, frente a hongos que deterioran la madera, está asociada a la presencia de compuestos de tipo quinonas en su composición, como naftoquinonas, antraquinonas y tectoquinonas (Velásquez et al, 2004;Kokutse et al, 2006;Thulasidas y Bhat, 2007;Nagadesi y Arya, 2013;Broco et al, 2016). Es necesario continuar con las investigaciones en el aislamiento, elucidación y citotoxicidad de los ingredientes activos presentes en el extracto de C. paraense para ser empleados en la industria de la preservación de la madera en la formulación de nuevos productos químicos ambientalmente amigables.…”

Section: Discussionunclassified

Extractivos del duramen de especies latífoliadas como preservantes en la madera de Pinus caribaea

Gil

Rojas²,

Encinas³

2019

Colomb. for.

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Se evaluó el comportamiento de los extractos del duramen de tres especies latífoliadas: Handroanthus serratifolius, Centrolobium paraense y Tectona grandis frente a hongos de pudrición marrón y blanca. Se impregnaron bloques de albura de Pinus caribaea con extractos a tres niveles de concentración 0.2 % 1 % y 2 % (p/v). Los bloques tratados se expusieron la acción de Gloeophyllum trabeum y Trametes versicolor durante 16 semanas mediante el método de soil block, normas ASTM D 1413. Las soluciones al 1 % y 2 % fueron más eficientes en disminuir el ataque de los microorganismos de prueba. El extracto de H. serratifolius fue el más efectivo, seguido de C. paraense y con efectos más sutiles pero efectivos el extracto de T. grandis. Los resultados demostraron que los metabolitos secundarios del duramen son una fuente importante de moléculas bioactivas para el tratamiento de maderas menos resistentes como el P. caribaea.

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“…Erosion and thinning of cell walls provide as evidence for a similar pattern of decay succession (Bari, Oladi, et al., ; Bari, Schmidt, et al., ; Bari et al., Eriksson et al., ; Schmidt, ; Schwarze et al., ). It is known that certain white‐rot fungi are able to switch from selective to simultaneous degradation over time or can cause selective removal of lignin at one location and simultaneous white‐rot at another location in the same tissues (Bari, Schmidt et al., ; Hartig, ; Nagadesi, Arya, & Albert, ; Otjen & Blanchette, ). The results presented here suggest that P. ostreatus is among those fungi.…”

Section: Discussionmentioning

confidence: 99%

A comparison between decay patterns of the white‐rot fungusPleurotus ostreatusin chestnut–leaved oak (Quercus castaneifolia) shows predominantly simultaneous attack bothin vivoandin vitro

et al. 2017

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Summary In this research, we examined decay patterns occurring in Quercus castaneifolia wood under natural conditions compared with controlled decay in vivo. Pleurotus ostreatus‐infected oak wood was obtained from the Sari forests in the north of Iran. The species causing decay was verified as P. ostreatus using rDNA‐ITS sequencing of pure cultures from infected sapwood. In addition to P. ostreatus, two wood‐inhabiting Ascomycota, Trichoderma harzianum and T. lixii, were present. Mass loss in oak sapwood samples exposed to P. ostreatus for 60 days was around 10 per cent. Samples were prepared from both naturally decayed wood and wood decayed under controlled conditions and examined using microscopy. P. ostreatus was found to produce a simultaneous white‐rot decay pattern in both conditions.

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Delignification pattern of wood decay by white rot fungi in teak (Tectona grandis L. f.)

Cited by 13 publications

References 13 publications

Delignification of Valuable Timbers Decayed by India Lignicolous Fungi

Delignification of Valuable Timbers Decayed by India Lignicolous Fungi

Extractivos del duramen de especies latífoliadas como preservantes en la madera de Pinus caribaea

A comparison between decay patterns of the white‐rot fungusPleurotus ostreatusin chestnut–leaved oak (Quercus castaneifolia) shows predominantly simultaneous attack bothin vivoandin vitro

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