Leptographium terebrantis inoculation and associated crown symptoms and tree mortality in Pinus taeda

Mensah, John Victor; Sayer, Mary Anne Sword; Nadel, Ryan L.; Matusick, George; Fan, Zhaofei; Carter, Emily A.; Eckhardt, Lori G.

doi:10.1016/j.funeco.2021.101057

Cited by 6 publications

(11 citation statements)

References 34 publications

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“…New sapwood growth was affected by pathogen inoculum In mature loblolly pine trees, the formation of new sapwood was shown to be critical for tree survival. Mensah et al (2021) found that loblolly pine trees producing thin and discontinuous new sapwood in response to L. terebrantis infection could not sustain crown function and developed sparse crowns. Additionally, trees that lost their crowns failed to produce new sapwood around the occluded tissue.…”

Section: Discussionmentioning

confidence: 97%

“…However, in a mature loblolly pine stand, it has been shown that L . terebrantis inoculation can cause crown symptomology (Mensah et al, 2021). Mensah et al (2021) reported that at high L .…”

Section: Discussionmentioning

confidence: 99%

“…terebrantis inoculation can cause crown symptomology (Mensah et al, 2021). Mensah et al (2021) reported that at high L . terebrantis inoculum density coupled with moderate drought, short chlorotic needles, and sparse crowns developed 19 months after inoculation.…”

Section: Discussionmentioning

confidence: 99%

“…Tissue occlusion caused by the spread of fungal mycelia, oleoresin deposition, and other secondary metabolites cause loss of sapwood function. Loss of sapwood function must occur in a large area to significantly disrupt sapwood function and negatively affect growth (Butnor et al, 1999; Mensah et al, 2021). In the current study, tissue occlusion of up to 32% did not significantly affect sapwood function as demonstrated by the foliage moisture content.…”

Section: Discussionmentioning

confidence: 99%

“…The absence of crown symptomology on the inoculated trees suggested that the young loblolly pine trees were either tolerant to the root pathogen or the stand conditions supported tree growth with adequate soil resources to overcome the stress imposed by the pathogen. However, in a mature loblolly pine stand, it has been shown that L. terebrantis inoculation can cause crown symptomology(Mensah et al, 2021) Mensah et al (2021). reported that at high L. terebrantis inoculum density coupled with moderate drought, short chlorotic needles, and sparse crowns developed 19 months after inoculation.…”

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confidence: 99%

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Sapwood growth and tolerance of Pinus taeda trees to Leptographium terebrantis inoculation

2022

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Leptographium terebrantis is an opportunistic root pathogen that has been implicated as a contributing factor of Pinus taeda decline and mortality over the past several decades in central parts of Alabama and Georgia, USA. We assessed the potential of L. terebrantis to initiate crown thinning in young P. taeda trees and hypothesized that L. terebrantis infestation will impose moisture stress on foliage, induce premature senescence, and cause loss of foliage biomass. The study was undertaken in a naturally regenerated 5–7‐year‐old P. taeda stand at Andalusia, Alabama in a completely randomized design using artificial inoculations of L. terebrantis colonized toothpicks. After four years of infestation, the pathogen caused sapwood occlusions and loss of sapwood function but failed to impose moisture stress on needles to induce premature senescence and loss of biomass. The new sapwood formed around the occluded area was devoid of pathogen infestation. The new growth was approximately twice the size of occluded tissue and compensated for the loss of old sapwood function to sustain tree growth. Results demonstrated that young P. taeda trees can tolerate L. terebrantis infection when stand conditions sustain the formation of new sapwood.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Sapwood growth and tolerance of Pinus taeda trees to Leptographium terebrantis inoculation

2022

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Little Leaf Disease and Pine Wood Nematodes Disrupt Anatomical and Physiological Traits of Pinus taeda at Subtropical Conditions in Southern Brazil

Souza,

Dobner,

Fermino

et al. 2023

Russ J Plant Physiol

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Analisis Penyebaran Pohon Pada Hutan Produksi Di Kelurahan Sungai Siring Kota Samarinda

Endayani

Stefano²,

Fathiah³

2022

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Penyebaran pohon pada hutan produksi yang mengandalkan proses alam maupun penangan manusia. Pemudaan pohon di suatu kawasan hutan bergantung pada tempat tumbuh. Penelitian ini bertujuan untuk mengetahui penyebaran pohon pada 3 kelas kelerengan di Kelurahan Sungai Siring, Kecamatan Samarinda Utara. Metode pengumpulan data menggunakan Sistem Informasi Geografi (GIS), pada tiga kelas kelerengan yaitu datar (0-8%), landai (8-15%) dan agak curam (15-25%). Hasil penelitian menunjukkan bagian timur dengan kelas lereng landai (0-8%) diperoleh 10 jenis dari 9 famili dengan jumlah 34 pohon, kelas lereng datar (8-15%) diperoleh 8 jenis dari 7 famili dengan jumlah 24 pohon, dan kelas lereng agak curam (15-25%) diperoleh 8 jenis dari 7 famili dengan jumlah 20 pohon. Bagian barat dengan kelas lereng datar (0-8%) diperoleh 9 jenis dari 9 famili dengan jumlah 31 pohon, kelas lereng landai (8-15%) diperoleh 10 jenis dari 9 famili dengan jumlah 25 pohon, dan kelas lereng agak curam (15-25%) diperoleh 8 jenis dari 8 famili dengan jumlah 19 pohon.

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Leptographium terebrantis inoculation and associated crown symptoms and tree mortality in Pinus taeda

Cited by 6 publications

References 34 publications

Sapwood growth and tolerance of Pinus taeda trees to Leptographium terebrantis inoculation

Sapwood growth and tolerance of Pinus taeda trees to Leptographium terebrantis inoculation

Little Leaf Disease and Pine Wood Nematodes Disrupt Anatomical and Physiological Traits of Pinus taeda at Subtropical Conditions in Southern Brazil

Analisis Penyebaran Pohon Pada Hutan Produksi Di Kelurahan Sungai Siring Kota Samarinda

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