Anthracnose disease incited by Colletotrichum gloeosporioides reduces the yield and market-quality of mangoes worldwide. Previous studies have indicated the potential of diverse antimicrobial volatile organic compounds emitted by the endophytic Pseudomonas putida BP25 for plant disease suppression. In the present study, we have explored native-volatiles of Pseudomonas putida BP25 and a synthetic-volatile, 2-ethyl-5-methylpyrazine, earlier identified in volatilome of Pseudomonas putida BP25 for reducing anthracnose in mango cultivar, Amrapali. The bacterial volatile compounds displayed fungistatic effects on the mycelial growth of Colletotrichum gloeosporioides in vitro. In planta prophylactic fumigation of mangoes with native-volatiles or the bacterial origin synthetic 2-ethyl-5-methylpyrazine for 24 h at 25 °C showed a reduction of anthracnose severity (>76 % reduction over mock) on fruit. Additionally, physicochemical qualities such as total-soluble solids, total-phenols, total-proline, total-carotenoid, total-flavonoid, and fruit-firmness were increased in fumigated fruit as compared to untreated mangoes. Anthracnose suppression coupled with the fruit quality enhancement by bacterial volatiles and synthetic 2-ethyl-5-methylpyrazine presents a new opportunity for postharvest management of mango during the storage, transit, and trade.

炭疽菌引起的炭疽病降低了全世界芒果的产量和市场质量。先前的研究表明内生恶臭假单胞菌BP25释放出的多种抗菌挥发性有机化合物具有抑制植物病害的潜力。在本研究中，我们已经探索的天然挥发恶臭假单胞菌BP25和合成挥发性，2-乙基-5-甲基吡嗪，在volatilome先前确定恶臭假单胞菌BP25用于减少炭疽病在芒果品种，Amrapali。细菌挥发性化合物对炭疽菌炭疽菌的菌丝体生长具有抑菌作用。在植物中在25°C下用天然挥发物或细菌来源的合成2-乙基-5-甲基吡嗪对芒果进行的预防性熏蒸24小时显示，水果上的炭疽病严重程度降低了（模拟量降低了76％以上）。此外，与未经处理的芒果相比，熏蒸后的水果的理化性质（如总可溶性固体，总酚，总脯氨酸，总类胡萝卜素，总黄酮和水果硬度）提高了。炭疽病的抑制以及细菌挥发物和合成的2-乙基-5-甲基吡嗪提高了果实的品质，为芒果在储藏，运输和贸易过程中的收获后管理提供了新的机会。