Diaporthe novem isolated from sunflower (Helianthus annuus) and other crop and weed hosts in Australia

Thompson, S. M.; Tan, Yu Pei; Neate, Stephen M.; Grams, Raechelle; Shivas, R. G.; Lindbeck, Kurt; Aitken, E. A. B.

doi:10.1007/s10658-018-1515-7

Cited by 14 publications

(6 citation statements)

References 26 publications

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“…Hasil penelitian di Brazil tentang pengaruh gulma terhadap produksi kedelai * Corresponding author: tumiar.katarina@fp.unila.ac.id menunjukkan kehadiran gulma Senna obtusifolia (L) terbukti telah menurunkan produksi kedelai hingga mencapai 30% (Souza et al, 2014). Dampak negatif lain yang ditimbulkan gulma yaitu dapat menjadi inang bagi hama dan penyakit tanaman (Ntidi et al, 2016;Sembodo, 2010;Thompson et al, 2018).…”

Section: Pendahuluanunclassified

Effect of Rainfall Intensity on Glyphosate Herbicide Effectiveness in Controlling Ageratum conyzoides, Rottboellia exaltata, and Cyperus rotundus Weeds

2020

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Glyphosate is one of herbicide active ingredient which is mostly used to control weeds in crops. However, in rain season herbicide effectiveness decreases as it is washed by rain. This research aimed to study effect of rainfall intensity on the effectiveness of herbicide (Round up 486 SL 2.5 l/ha.) with isopropilamina glyphosate as the active ingredient in controlling specific weeds Ageratum conyzoides, Rottboellia exaltata, and Cyperus rotundus. The experiment was consisted of six treatments and arranged in randomized block design with 8 replications. The treatments were level of rain intensity which were 5 mm/hour, 10 mm/hour, 20 mm/hour, 40 mm/hour, no rain and control (no herbicide no rain). Rainfall intensity was determined by conducting simulation trials prior to the treatments and applied 30 minutes after herbicide applications. The results showed that herbicide effectiveness decreased as the rainfall intensity incresed, even though with longer time the herbicide was still able to control the weeds. The effect of rainfall intensity on herbicide effectiveness was different for different weeds. Up to intensity 40 mm/hour herbicide was capable to control weeds but with level of weeds destruction 20-60%.

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Section: Pendahuluanunclassified

Effect of Rainfall Intensity on Glyphosate Herbicide Effectiveness in Controlling Ageratum conyzoides, Rottboellia exaltata, and Cyperus rotundus Weeds

2020

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“…In previous studies, Smilax glabra and Xanthium strumarium have been reported as hosts of Diaporthe (Vrandecic et al 2007(Vrandecic et al , 2010Gao et al 2013;Thompson et al 2018). D. eres (= D. mahothocarpi) and D. lithocarpi were identified as the cause agents of leaf spot disease based on morphology and phylogenetics on S. glabra in China (Gao et al 2013).…”

Section: Introductionmentioning

confidence: 99%

“…D. helianthi and D. longicolla, pathogens of X. strumarium, have been collected from blighted stems and branches in Croatia (Vrandecic et al 2007(Vrandecic et al , 2010. D. pseudolongicolla (= D. novem) has been reported as a branch dieback agent in X. strumarium in Australia (Thompson et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Two new species of Diaporthe (Diaporthaceae, Diaporthales) in China

Ya-Quan¹,

Ma²,

Han³

et al. 2023

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Species of Diaporthe have been reported as plant endophytes, pathogens and saprobes on a wide range of plant hosts. Strains of Diaporthe were isolated from leaf spots of Smilax glabra and dead culms of Xanthium strumarium in China, and identified based on morphology and molecular phylogenetic analyses of combined internal transcribed spacer region (ITS), calmodulin (cal), histone H3 (his3), translation elongation factor 1-alpha (tef1) and β-tubulin (tub2) loci. As a result, two new species named Diaporthe rizhaoensis and D. smilacicola are identified, described and illustrated in the present study.

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“…While Thompson et al (2011) Mathew et al (2015) reported D. helianthi and D. gulyae caused the disease in the United States. Subsequently, D. novem was also reported as pathogenic on sunflower and associated with the PSC outbreak in Australia (Thompson et al 2018).…”

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confidence: 99%

Six Species of Diaporthe Associated with Phomopsis Stem Canker of Sunflower in Southern Pampean Region of Argentina

Zambelli

Mancebo²,

Bazzalo³

et al. 2021

Plant Health Progress

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A survey of 67 commercial fields in 19 locations was conducted in the southern Pampean region of Argentina for Phomopsis stem canker of sunflower (Helianthus annuus L.) between 2014 and 2019. A total of 210 plants having typical symptoms of Phomopsis stem canker were randomly sampled, and fungal isolation was performed. Of the 187 isolates of Diaporthe that were recovered, 94% of the isolates showed morphological characteristics similar to D. helianthi, 3% to D. gulyae, 1% to D. caulivora, 1% to D. sojae, 0.5% to D. kongii, and 0.5% to D. longicolla. Following morphological characterization, the identity of the six morpho-species was confirmed by phylogenetic analyses of β-tubulin, translation elongation factor 1-α, and internal transcribed spacer gene regions. Koch’s postulates were completed for the six fungi by inoculating one susceptible sunflower hybrid with one isolate each of the six species of Diaporthe using the stem-wound inoculation method. Seven days postinoculation, significant differences in disease severity were observed between the six isolates (P < 0.0001), with D. helianthi and D. gulyae isolates causing significantly greater disease severity. To our knowledge, this is the first report of D. kongii, D. longicolla, D. caulivora, and D. sojae associated with Phomopsis stem canker of sunflower in Argentina.

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Diaporthe novem isolated from sunflower (Helianthus annuus) and other crop and weed hosts in Australia

Cited by 14 publications

References 26 publications

Effect of Rainfall Intensity on Glyphosate Herbicide Effectiveness in Controlling Ageratum conyzoides, Rottboellia exaltata, and Cyperus rotundus Weeds

Effect of Rainfall Intensity on Glyphosate Herbicide Effectiveness in Controlling Ageratum conyzoides, Rottboellia exaltata, and Cyperus rotundus Weeds

Two new species of Diaporthe (Diaporthaceae, Diaporthales) in China

Six Species of Diaporthe Associated with Phomopsis Stem Canker of Sunflower in Southern Pampean Region of Argentina

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Diaporthe novem isolated from sunflower (Helianthus annuus) and other crop and weed hosts in Australia

Cited by 14 publications

References 26 publications

Effect of Rainfall Intensity on Glyphosate Herbicide Effectiveness in Controlling Ageratum conyzoides, Rottboellia exaltata, and Cyperus rotundus Weeds

Effect of Rainfall Intensity on Glyphosate Herbicide Effectiveness in Controlling Ageratum conyzoides, Rottboellia exaltata, and Cyperus rotundus Weeds

﻿Two new species of Diaporthe (Diaporthaceae, Diaporthales) in China

Six Species of Diaporthe Associated with Phomopsis Stem Canker of Sunflower in Southern Pampean Region of Argentina

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Two new species of Diaporthe (Diaporthaceae, Diaporthales) in China