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Chhana Ullah
Researcher at Max Planck Society
Publications - 17
Citations - 750
Chhana Ullah is an academic researcher from Max Planck Society. The author has contributed to research in topics: Jasmonic acid & Arabidopsis thaliana. The author has an hindex of 10, co-authored 13 publications receiving 431 citations. Previous affiliations of Chhana Ullah include Ghent University.
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Journal ArticleDOI
Fungal Planet description sheets: 320–370
Pedro W. Crous,Michael J. Wingfield,Josep Guarro,Margarita Hernández-Restrepo,Deanna A. Sutton,Krishnendu Acharya,Paul A. Barber,Teun Boekhout,Roumen Dimitrov,Margarita Dueñas,Arun Kumar Dutta,Josepa Gené,D.E. Gouliamova,Marizeth Groenewald,Lorenzo Lombard,O. V. Morozova,Jit Sarkar,M.Th. Smith,Alberto M. Stchigel,Nathan P. Wiederhold,A. V. Alexandrova,I. Antelmi,Josep Armengol,Irene Barnes,José F. Cano-Lira,R. F. Castañeda Ruiz,Marco Contu,Pr. R. Courtecuisse,A. L. da Silveira,Cony Decock,A. de Goes,J. Edathodu,Enrico Ercole,Ana Carolina Firmino,Arista Fourie,Jacques Fournier,Edson Luiz Furtado,Andrew D. W. Geering,Jonathan Gershenzon,Alejandra Giraldo,David Gramaje,Almuth Hammerbacher,X.-L. He,D. Haryadi,Wanporn Khemmuk,A. E. Kovalenko,R. Krawczynski,F. Laich,Christian Lechat,Ueder Pedro Lopes,Hugo Madrid,E. F. Malysheva,Yasmina Marin-Felix,María P. Martín,Lizel Mostert,Franco Nigro,Olinto Liparini Pereira,B. Picillo,Danilo Batista Pinho,E. S. Popov,C. A. Rodas Peláez,Suzanne Rooney-Latham,Marcelo Sandoval-Denis,Roger G. Shivas,V. Silva,Margarita Stoilova-Disheva,M.T. Telleria,Chhana Ullah,Sybille B. Unsicker,N. A. van der Merwe,Alfredo Vizzini,H.-G. Wagner,P. T. W. Wong,Alan R. Wood,Johannes Z. Groenewald +74 more
TL;DR: Novel species of fungi described in the present study include the following from Malaysia: Castanediella eucalypti from EUCalyptus pellita, Codinaea acacia from Acacia mangium, Emarcea eucallyptigena from EucalyPTus brassiana, Myrtapenidiella gaelicola eucaliptorum from Eukalyptu pellitas, Pilidiellarina euc
Journal ArticleDOI
Flavan-3-ols Are an Effective Chemical Defense against Rust Infection
Chhana Ullah,Sybille B. Unsicker,Christin Fellenberg,C. Peter Constabel,Axel Schmidt,Jonathan Gershenzon,Almuth Hammerbacher,Almuth Hammerbacher +7 more
TL;DR: Studying the biosynthesis, occurrence, and antifungal activity of flavan-3-ols in black poplar (Populus nigra), which include both monomers, such as catechin, and oligomers, known as proanthocyanidins (PAs, indicate that cate chin and PAs are effective antif fungus defenses in poplar against foliar rust infection.
Journal ArticleDOI
Salicylic acid activates poplar defense against the biotrophic rust fungus Melampsora larici‐populina via increased biosynthesis of catechin and proanthocyanidins
Chhana Ullah,Chung-Jui Tsai,Sybille B. Unsicker,Liang-Jiao Xue,Michael Reichelt,Jonathan Gershenzon,Almuth Hammerbacher +6 more
TL;DR: It is concluded that salicylic acid activates flavan‐3‐ol biosynthesis in poplar against rust infection, and a strong association among SA, flavan-3‐ols biosynthesis, and rust resistance in poplars is suggested.
Journal ArticleDOI
O-Acyl Sugars Protect a Wild Tobacco from Both Native Fungal Pathogens and a Specialist Herbivore
Van Thi Luu,Alexander Weinhold,Chhana Ullah,Stefanie Dressel,Matthias Schoettner,Klaus Gase,Emmanuel Gaquerel,Shuqing Xu,Ian T. Baldwin +8 more
TL;DR: O-AS function as direct defenses to protect plants from attack by both native pathogenic fungi and a specialist herbivore and infer that their diversification is likely shaped by the functional interactions among these biotic stresses.
Journal ArticleDOI
The phytopathogenic fungus Sclerotinia sclerotiorum detoxifies plant glucosinolate hydrolysis products via an isothiocyanate hydrolase.
Jingyuan Chen,Chhana Ullah,Michael Reichelt,Franziska Beran,Zhi-Ling Yang,Jonathan Gershenzon,Almuth Hammerbacher,Daniel Giddings Vassão +7 more
TL;DR: It is shown that the plant pathogenic fungus Sclerotinia sclerotiorum converts isothiocyanates into non-toxic compounds via glutathione conjugation and, more effectively, via hydrolysis to amines using an isothuocyanate hydrolase.