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ボレミア・エキシグアによって引き起こされる侵入性黒いスローワート (Vincetoxicum nigrum) の葉の病気
Michael Robert Fulcher1, Riley Larkin2,3, Alexandra Johnson4
1USDA-ARS Foreign Disease-Weed Science Research Unit, 1301 Ditto Avenue, Fort Detrick, Maryland, United States, 21702; michael.fulcher@usda.gov.
Plant disease
|September 5, 2025
まとめ
侵入性の黒いスローワートに新しい菌類の病原体,ボレミア・エキシグアが確認されました. 強い生物学的制御ではありませんが 主要な作物を脅かすことなく 新しい病原体の多様性を明らかにします
科学分野:
- 植物病理学
- 菌類学
- 侵入種管理
背景:
- 黒いスローワート (Vincetoxicum nigrum) は,米国北東部で問題のある侵入性ブドウである.
- 黒いスワローワートの葉の損傷は 未知のキノコ病原体をもたらしました
研究 の 目的:
- 黒いスローワートに関連した真菌病原体を特定します.
- 生物学的制御剤としての病原体の可能性を評価する.
- 農作物に対する病原体のリスクを評価する.
主な方法:
- 菌類の8種を 形状と分子で特定した.
- 選択された単離物 (FDWSRU 22-216) で黒いスワローワートの接種.
- 農作物 (トマト,大麦,紫陽花,麻) をB.exiguaで接種する.
主要な成果:
- 病原体はボレミア・エキシグアと特定されました
- 黒いスローワートでは限られた疾患症状が観察されましたが,実質的な健康低下は認められませんでした.
- 検査した作物には病気の症状は出なかった.
- 2つのB. exiguaの遺伝子型が特定され,1つは新型で,温度成長の最適度が異なる.
結論:
- ボレミア・エキシガは,黒いスワローワートの直接的な生物学的コントロールとして,限られた可能性を秘めています.
- この病原体は 農作物の生産に 最小限の危険をもたらします
- 侵入性植物には,新しく多様な病原体の遺伝子型があります.
- 雑草抑制のためのB.exiguaの二次代謝物質をさらに研究することができます.
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