Diversity in phyllosphere mycoflora infected with Black Mildew

Abstract

Correct identity of a fungus absolutely free from ambiguities is vital for i ts employment in applied disci- pline. The weeds and forest plants serve as reservoirs of leaf spot pathogens which on getting opportunity may spread to agricultural and horticulture plants. Keeping this view in mind the authors during January 9- 12, 2088 while in Mahabaleshwar, surveyed the lush green vegetation for folicolous fungi on Jan 10, 2008. The authors collected eleven host plants being parasitized with none fungi. out of these two hosts Syzygium sp. Linn. (Myrtacear; HClo- 48269) and Flacourtia indica Merrill (Flacourtiaceae; HClO- 48270) were found infected with novel species of Meliola syzygineaSingh and Mall sp. no. and M. flacourticola Sing and Mall sp. nov. respectively. The fungal diversity of Phyllosphere mycoflora of the above said two hosts were worked out following standard methods. On Syzygium sp. Linn., Meliola syzginea Singh and Mall sp. no. only was represent- ing frequency class D where as Aspergillus niger Van Tiegh, A. flavus L., Curvularia sp. (Waker) Boedifin was representing class C; A. Terreus Thom, Scoratia sp., Mucor sp. class B; Fusarium sp. Sheldon and Penicillum sp. class A. No fungus was found representing frequency class E. On Flacourtia indica Merrill, Aspergillus niger Van Tiegh only was found representing frequency class E where as Meliola flacourticola Singh and Mall sp. nov. and ustus Thom and Church represented class D; Trichoderma verdi Pers. ex Fr., Fusarium sp. Sheldon. class C; Rhizopus sp. Ehrenb ex Corda, Scoratia sp. class B and Trichoderma sp., Penicillium globarcum class A.

Keywords

• Mycobial diversity
• Phyllosphere, Black mildew
• Species novum