Estimating maize lethal necrosis (MLN) severity in Kenya using multispectral high-resolution data

Richard, Kyalo; Abdel‐Rahman, Elfatih M.; Subramanian, Sevgan; Nyasani, Johnson O.; Thiel, Michael; Jozani, Hossein Jafari; Borgemeister, Christian; Mudereri, Bester Tawona; Landmann, Tobias

doi:10.1007/s12518-021-00357-4

Cited by 5 publications

(1 citation statement)

References 56 publications

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“…Multispectral high-resolution techniques combined with field-based data have been evaluated in a semi-humid climatic zone of Kenya to estimate MLN severity and to map this onto three severity levels (mild, moderate, high) (Richard et al, 2021). However, the results suggested spectral confusion in the mildly and moderately affected fields due to the onset of early MLN symptoms, rather than other biotic or abiotic stressors.…”

Section: Maize Lethal Necrosismentioning

confidence: 99%

A Synoptic Review of Plant Disease Epidemics and Outbreaks Published in 2021

Jeger¹,

Fielder²,

Beale³

et al. 2022

Preprint

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A synoptic review of plant disease epidemics and outbreaks was made using two complementary approaches. The first approach involved reviewing scientific literature published in 2021, in which quantitative data related to new plant disease epidemics or outbreaks had been obtained via surveys or similar methodologies. The second approach involved retrieving new pest presence records added to the CABI Distribution Database in 2021. The literature review for the first approach had two stages. Stage 1 aimed to identify publications on plant diseases caused by pathogen taxonomic groups and led to retrieval of 99 core articles describing studies in 62 categories (pathogen species or species complexes) across more than 40 host species in 6 continents. In Stage 2, the core articles were augmented with further articles providing more context and information for the pathogen species identified in Stage 1. When both sets of articles were combined, the pathogen species with more than 5 articles were: Bursephalenchus xylophilus, Candidatus Liberibacter asiaticus, cassava mosaic viruses, citrus tristeza virus, Erwinia amylovora, Fusarium spp. complexes, Fusarium oxysporum f.sp cubense, Magnaporthe oryzae, maize lethal necrosis co-infecting viruses, Meloidogyne spp. complexes, Pseudomonas syringae pvs, Puccinia striiformis f.sp tritici, Xylella fastidiosa, and Zymoseptoria tritici. The automated search of the CABI Distribution Database led to 617 new distribution records from 283 plant pathogens in 2021 and was followed by manual review of all pathogens with more than 4 new records, to identify confirmed first reports in a new location. A total of 15 pathogens was identified: apple hammerhead viroid, apple rubbery wood viruses, Aphelenchoides besseyi, Biscogniauxia mediterranea, Ca. Liberibacter asiaticus, citrus tristeza virus, Colletotrichum siamense, cucurbit chlorotic yellows virus, Erwinia rhapontici, Erysiphe corylacearum, Fusarium oxysporum f.sp. cubense Tropical Race 4, Globodera rostochiensis, Nothophoma quercina, potato spindle tuber viroid, and tomato brown rugose fruit virus. Although 3 very important pathogens – Ca. Liberibacter asiaticus, citrus tristeza virus and Fusarium oxysporum f.sp cubense – were represented in the results of both approaches, in general the two approaches revealed distinct sets of plant disease outbreaks and new records, with little overlap in the results.

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Section: Maize Lethal Necrosismentioning

confidence: 99%

A Synoptic Review of Plant Disease Epidemics and Outbreaks Published in 2021

Jeger¹,

Fielder²,

Beale³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

Advances in data-collection tools and analytics for crop pest and disease management

Tonnang¹,

Salifu²,

Mudereri³

et al. 2022

Current Opinion in Insect Science

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The germination response of Zea mays L. to osmotic potentials across optimal temperatures via halo-thermal time model

Amin,

Shah,

Ullah

et al. 2024

Sci Rep

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The maize (Zea mays L.) is a monocot that is a member of the Poaceae family and a valuable feed for livestock, human food, and raw material for various industries. The halothermal time model determines how plants respond to salt (NaCl) stress under sub-optimal conditions. This model examines the relation between NaClb (g), GR, GP, salinity and temperature stress on germination of seeds dynamics in various crops. Five constant temperatures i.e. 20, 25, 30, 35, and 40 °C and five ψ levels (NaCl concentrations converted to ψ − 0, − 0.2, − 0.4, − 0.6, and − 0.8 MPa) were used in this experiment. In light of the results, the maximum halo-thermal time constant value was recorded at 35 °C temperature, while maximum germination percentage was detected at 30 °C in the controlled condition. Moreover, the lowermost value was recorded at 20 °C at − 0.8 MPa osmotic potential. The highest CAT, APX, and GPX activities were recorded at 15 °C at − 0.8 MPa, while the lowest values were observed for 0 MPa at 30 °C temperature. In conclusion, by employing the halo thermal time model, the germination of maize variety (var.30W52) was accurately predicted for the first time under varying levels of temperature and osmotic potentials.

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Estimating maize lethal necrosis (MLN) severity in Kenya using multispectral high-resolution data

Cited by 5 publications

References 56 publications

A Synoptic Review of Plant Disease Epidemics and Outbreaks Published in 2021

A Synoptic Review of Plant Disease Epidemics and Outbreaks Published in 2021

Advances in data-collection tools and analytics for crop pest and disease management

The germination response of Zea mays L. to osmotic potentials across optimal temperatures via halo-thermal time model

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