PERFORMANCE AND PERSISTENCE OF GREEN FLUORESCENT PROTEIN (gfp) MARKED AZOTOBACTER CHROOCOCCUM IN STERILIZED AND UNSTERILIZED WHEAT RHIZOSPHERIC SOIL

The persistence and performance (growth promoting potential) of green fluorescent protein (gfp) marked Azotobacter chroococcum strain ABR 4G were studied in sterilized and unsterilized wheat rhizospheric soil. The gfp was integrated via Tn 5 transposition into A. chroococcum chromosome and the resultant gfp marked colonies were identified by green fluorescent emission under UV light. The gfp was stably maintained in A. chroococcum and the gfp insertion had no apparent adverse effect on the growth promoting properties of the marked soil isolate ABR 4G. The growth promoting properties (nitrogen fixation, ammonia excretion, phosphate solubilization and IAA production) of the parent soil isolate and the gfp marked strain were found to be almost the same. All the quantitative wheat plant traits were significantly influenced by inoculation of A. chroococcum ABR 4G strain in sterilized and unsterilized soil. Inoculated bacterial counts increased gradually in wheat rhizosphere, reached maximum on 60 th d and declined on 80 th d. Fertility levels also affected survival of marked strain and the survival was comparable in sterilized and unsterilized soil. The growth promoting properties were also determined from the marked strain reisolated from wheat rhizosphere in both types of soil. Fig 1, Tab 2, Ref

Global diversity and distribution of distoseptosporic micromycete Corynespora Güssow(Corynesporascaceae):An updated checklist with current status

A review and updated checklist of Corynespora(Dematiaceous hyphomycetes)diversity and distribution reported from all over the world is prepared and presented over here based on available bibliographic survey upon published data.After critical review and verification,a total of 207 taxonomic records of Corynespora has been found in Index Fungorum,among them 179 spp.(86.47%)have been found as nomenclaurally valid/accepted taxa,while 14 spp.(6.76%)found to be transferred to other different taxa,11 spp.(5.31%)synonymously transferred to other Corynespora taxa,and 3 spp.(1.44%)found as invalid taxa.In all word-wide recorded Corynespora species,114 spp.(55.07%)have been found as foliicolous,90 spp.(43.47%)as lignicolous,2 spp.(0.96%)as lichenicolous,and 1 sp.(0.48%)from the air.Similarly,184 spp.(88.88%)have been reported on Angiosperms,1 sp.(0.48%)on Gymnosperms,22 spp.(10.62%)recorded on unidentified plant parts/taxa,whereas no one species recorded on Bryophytes and Pteridophytes.Likewise,166 spp.(80.19%)have been recorded on 54 families of Dicot,18 spp.(8.69%)on 6 families of monocot,1 sp.(0.48%)on 1 family of Gymnosperm,and 22 spp.(10.62%)on unidentified plant parts/taxa.Furthermore,the distribution of Corynespora spp.have been recorded from 34 countries,in which the species richness recorded maximum in India(80 spp.,38.64%)followed by China(31 spp.,14.97%),USA(11 spp.,5.31%),and other countries.Besides,distinguishing features of valid Corynespora spp.are also provided along with their hosts/substrate,host’s family,distribution(country),and references.This paper provides an updated checklist of Corynespora spp.reported from all over the world with their current status in the context of current nomenclature.In order to get all collected scientific information at one shop for further scientific study on exploration of Corynespora,this compiled up-to-date checklist with their comparative morphology would be vital and helpful to the researchers of concern fields as well as allied disciplines.

Curvularia martyniicola,a new species of foliicolous hyphomycetes on Martynia annua from India

In the micromycofloristic survey of some dematiaceous hyphomycetes from the Terai region of Uttar Pradesh(India),an undescribed species(C.martyniicola)of anamorphic fungus Curvularia Boedijn was found on living leaves of Martynia annua(Martyniaceae).The novel fungus is described,illustrated and discussed in details.The present species is compared with earlier reported similar taxon,and is characterized by longer conidiophores and conidia with less septa.A key is provided to all the species of Curvularia recorded on Martyniaceae and Pedaliaceae.The details of nomenclatural novelties were deposited in MycoBank(www.MycoBank.org).

Corynespora celastri sp.nov.on Celastraceae from India

Corynespora celastri sp.nov.,is introduced on living leaves of Celastrus paniculatus(Celastraceae)collected from Paniyara forest of Mahrajganj,Uttar Pradesh,India.The new species is illustrated and compared with closely similar species reported on Celastraceae.This species is characterized by having longer conidiophores and conidia among the members reported on same host family.A key to all species of Corynespora on Celastraceae is also provided.