Phytophthora Species and Their Associations with Chaparral and Oak Woodland Vegetation in Southern California

Journal of Fungi, Journal Year: 2025, Volume and Issue: 11(1), P. 33 - 33

Published: Jan. 4, 2025

Evidence of unintended introductions Phytophthora species into native habitats has become increasingly prevalent in California. If not managed adequately, can devastating agricultural and forest plant pathogens. Additionally, California’s natural areas, characterized by a Mediterranean climate dominated chaparral (evergreen, drought-tolerant shrubs) oak woodlands, lack sufficient baseline knowledge on biology ecology, hindering effective management efforts. From 2018 to 2021, soil samples were collected from Angeles National Forest lands (Los County) with the objective better understanding diversity distribution Southern Forty sites surveyed, taken rhizospheres, riverbeds, off-road vehicle tracks woodland areas. these surveys, fourteen detected, including P. cactorum (subclade 1a), multivora 2c), sp. cadmea 7a), taxon ‘oakpath’ 8e, first reported this study), several clade-6 species, crassamura. detected rhizosphere found underneath both symptomatic asymptomatic plants most frequently associated Salvia mellifera, Quercus agrifolia, Salix present areas primarily riparian detections tracks, trails, riverbeds. Although ecosystems are among driest fire-prone United States, they harbor large indicating potential risk for disease Californian vegetation.

Language: Английский

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Diversity and Distribution of Phytophthora Species Along an Elevation Gradient in Natural and Semi-Natural Forest Ecosystems in Portugal

Pathogens, Journal Year: 2025, Volume and Issue: 14(1), P. 103 - 103

Published: Jan. 20, 2025

Globally, forests are constantly threatened by a plethora of disturbances natural and anthropogenic origin, such as climate change, forest fires, urbanization, pollution. Besides the most common stressors, during last few years, Portuguese have been impacted severe decline phenomena caused invasive pathogens, many which belong to genus Phytophthora. The Phytophthora includes large number species that invading ecosystems worldwide, chiefly consequence global trade human activities. This paper reports results survey diversity in semi-natural Portugal along an elevation gradient. Isolations performed from 138 symptomatic plant tissues rhizosphere samples collected 26 yielded total 19 belonging 6 phylogenetic clades, including P. cinnamomi (36 isolates), multivora (20), plurivora (9), cactorum (8), lacustris pseudocryptogea amnicola (6), hedraiandra pseudosyringae (5), thermophila bilorbang (4), inundata asparagi (3), citricola gonapodyides rosacearum chlamydospora (2), pachypleura syringae (1). Overall, data obtained highlight widespread occurrence sea level mountain habitats. pathogenicity tests carried out on 2-year-old chestnut plants confirmed key role recrudescence ink disease additional risk posed pachypleura, plurivora, forests. Finally, three species, citricola, hedraiandra, reported for first time Portugal.

Language: Английский

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Metabarcoding reveals rhizosphere microbiome shifts between healthy and declining Quercus robur trees

Rhizosphere, Journal Year: 2025, Volume and Issue: unknown, P. 101070 - 101070

Published: April 1, 2025

Language: Английский

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Unraveling a Century-Old Mystery: The Role of Ophiostoma quercus in Oak Decline

Plant Physiology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109948 - 109948

Published: April 1, 2025

Language: Английский

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Breeding Alnus species for resistance to Phytophthora disease in the Iberian Peninsula

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: Dec. 9, 2024

Alders are widely distributed riparian trees in Europe, North Africa and Western Asia. Recently, a strong reduction of alder stands has been detected Europe due to infection by

Language: Английский

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