Septoria and Stagonospora Diseases of Cereals - CIMMYT ...

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Table 1. Sources of isolates or DNA sequences for the internal transcribed spacer database of Septoria passerinii, Mycosphaerella graminicola, and other fungi in the Dothideales. Species Isolate Growth medium Source Cladosporium caryigenum LCF — GenBank Cladosporium herbarum MZKI B-1002 — GenBank Cladosporium sphaerospermum MZKI B-1005 — GenBank Dothidea hippophaeos CBS 186.58 — GenBank Dothidea insculpta CBS 189.58 — GenBank Hormonema dematioides — — GenBank Leptosphaeria bicolor — — GenBank Leptosphaeria conteca — Malt broth ATCC Leptosphaeria doliolum — — Genbank Leptosphaeria maculans — — Genbank Leptosphaeria microscopica — — Genbank Mycosphaerella citri — Yeast malt broth Tobin Peever Mycosphaerella fijiensis — PDB ATCC Mycosphaerella graminicola — — GenBank Mycosphaerella graminicola IPO323 Yeast malt broth Gert Kema Mycosphaerella graminicola T1 Yeast malt broth Minnesota Mycosphaerella graminicola T48 Yeast malt broth Indiana Mycosphaerella musicola — PDB ATCC Mycosphaerella pini — — GenBank Mycosphaerella tassiana CBS 111.82 — GenBank Ophiosphaerella herpotricha — — GenBank Ophiosphaerella korrae — — GenBank Phaeosphaeria avenaria — — GenBank Phaeosphaeria halima — Emerson YpSs ATCC Phaeosphaeria nodorum — — GenBank Phaeosphaeria spartinae — Emerson YpSs ATCC Phaeosphaeria typharum — Emerson YpSs ATCC Phaeotheca triangularis MZKI B-950 — GenBank Rhizopycnis vagum — — GenBank Septoria passerinii 22585 Yeast malt broth ATCC Septoria passerinii 26516 Yeast malt broth ATCC Septoria passerinii P70 Yeast malt broth North Dakota Septoria passerinii P71 Yeast malt broth North Dakota Septoria passerinii P78 Yeast malt broth Minnesota Septoria passerinii P83 Yeast malt broth North Dakota Trimmatostroma salinum MZKI B-962 — GenBank shown). The neighbor-joining tree showed that S. passerinii and M. graminicola clustered together along with most of the other Mycosphaerella species (Figure 1). Phaeosphaeria nodorum was in a very different cluster that mostly contained species of Phaeosphaeria, Leptosphaeria, and Ophiosphaerella (Figure 1). Bootstrap analysis indicated strong support for all of the major clusters (Figure 1). Discussion These data clearly indicate that S. passerinii and M. graminicola are very closely related. Because these two taxa were deeply embedded within a large cluster of Septoria passerinii Closely Related to the Wheat Pathogen Mycosphaerella graminicola 35 Mycosphaerella species, it seems certain that S. passerinii has, or was derived from a progenitor that had, a Mycosphaerella teleomorph. This must be confirmed by searching for the Mycosphaerella stage on infected barley tissue. In addition to elucidating the evolutionary relationships of S. passerinii, the cluster analysis raises a number of interesting questions. For example, Phaeosphaeria, Leptosphaeria, and Ophiosphaerella form a large cluster. However, it is not clear whether Phaeosphaeria warrants a separate generic designation. Clarifying the relationships among the mitosporic Dothideales (those with no known sexual stage) will require a larger number of species and a more comprehensive analysis. Aligning the 5.8S and ITS2 regions was fairly straightforward. However, ITS1 varied greatly in length, which made alignment difficult. The alignment used for the cluster analysis presented here has not been optimized and, thus, should be considered preliminary. However, the close relationship between S. passerinii and M. graminicola is certain. Reference Cunfer, B.M., and Ueng, P.P. 1999. Taxonomy and identification of Septoria and Stagonospora on small grain cereals. Annual Review of Phytopathology (in press).
36 Session 1 — S.B. Goodwin and V.L. Zismann 0.05 100 96 100 100 97.4 100 100 100 100 100 100 100 100 99.9 99.6 Leptosphaeria bicolor Leptosphaeria conteca Ophiosphaerella korrae Ophiosphaerellaherpotricha Phaeosphaeria typharum Phaeosphaeria halima Phaeosphaeria avenaria Phaeosphaeria nodorum Phaeosphaeria spartinae Leptosphaeria microscopica Leptosphaeria maculans Leptosphaeria doliolum Rhizopycnis vagum Septoria passerinii P78 Septoria passerinii P26516 Septoria passerinii P71 Septoria passerinii P83 Septoria passerinii P22585 Septoria passerinii P70 Mycosphaerella graminicola T1 Mycosphaerella graminicola Mycosphaerella graminicola IPO Mycosphaerella graminicola T48 Mycosphaerella citri Mycosphaerella musicola Mycosphaerella fijiensis Mycosphaerella pini 100 Dothidea hippophaeos Dothidea insculpta Hormonema dematioides Mycosphaerella tassiana Cladosporium herbarum Cladosporium sphaerospermum Trimmatostroma salinum Phaeotheca triangularis Cladosporium caryigenum Figure 1. Phylogenetic analysis of sequences of the internal transcribed spacer region of the ribosomal DNA of Septoria passerinii, Mycosphaerella graminicola and other fungi in the Dothideales. All bootstrap values above 90% are indicated.
Page 1 and 2: Septoria and Stagonospora Diseases
Page 3 and 4: ii The Organizing Committee express
Page 5 and 6: iv 87 Genetic Variability in a Coll
Page 7 and 8: vi Foreword In the mid-1970s the id
Page 9 and 10: 2 Opening Remarks — S. Rajaram ar
Page 11 and 12: 4 Opening Remarks — S. Rajaram Ta
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Page 15 and 16: 8 Opening Remarks — S. Rajaram br
Page 17 and 18: 10 Opening Remarks — S. Rajaram T
Page 19 and 20: 12 Opening Remarks — S. Rajaram t
Page 21 and 22: 14 Opening Remarks — S. Rajaram C
Page 23 and 24: 16 Opening Remarks — S. Rajaram r
Page 26 and 27: Session 1: Pathogen Biology Biology
Page 28 and 29: Table 2. The Septoria tritici/Stago
Page 30 and 31: Molecular Analysis of a DNA Fingerp
Page 32 and 33: histidine kinase in yeast, although
Page 34 and 35: According to the previous observati
Page 36 and 37: cultivars. The presence of pycnidia
Page 38 and 39: Provided that S. nodorum fungal gen
Page 40 and 41: ;; yy ;; yy 6 28% 1 32% ;y; ; y y ;
Page 44 and 45: Septoria/Stagonospora Leaf Spot Dis
Page 46: Interrelations among Septoria triti
Page 49 and 50: 42 Session 2 — B.M. Cunfer disper
Page 51 and 52: 44 Session 2 — B.M. Cunfer beyond
Page 53 and 54: 46 Aggressiveness of Phaeosphaeria
Page 55 and 56: 48 Session 2 — P. Halama, F. Lala
Page 57 and 58: 50 Growth of Stagonospora nodorum L
Page 59 and 60: 52 Session 3A — G.H.J. Kema and E
Page 61 and 62: 54 A Possible Gene-for-Gene Relatio
Page 63 and 64: 56 Diallel Analysis of Septoria Tri
Page 65 and 66: 58 Session 3A — X. Zhang, S.D. Ha
Page 67 and 68: 60 Session 3A — L. Gilchrist, C.
Page 69 and 70: 62 Session 3A — L. Gilchrist, C.
Page 71 and 72: 64 Session 3B — E. Arseniuk and P
Page 75 and 76: 68 Cultivar variances Cultivar vari
Page 79 and 80: 72 Session 3B — N.E.A. Murphy, R.
Page 81 and 82: 74 Inheritance of Septoria Nodorum
Page 83 and 84: 76 Session 3B — N.E.A. Murphy, R.
Page 85 and 86: 78 Session 4 — B.A. McDonald, C.C
Page 91 and 92: 84 Session 4 — E. Arseniuk, H.S.
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86 Session 4 — C. Cowger, C.C. Mu
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88 each isolate. Two of the probes
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90 Mating Type-Specific PCR Primers
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92 Session 4 — Bennett, R.S., S.-
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94 Session 5 — M.W. Shaw and the
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96 Session 5 — M.W. Shaw The path
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98 Spore Dispersal of Leaf Blotch P
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Session 5 — C.A. Cordo, M.R. Sim
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102 Epidemiology of Seedborne Stago
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Session 5 — D.A. Shah and G.C. Be
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106 Session 6A / Session 6B — J.M
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Session 6A / Session 6B — C.C. Mu
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118 Session 6C — M. van Ginkel an
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Session 6C — G. Shaner 128 An exa
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Session 6C — G. Shaner 130 Anothe
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Session 6C — M. Díaz de Ackerman
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134 Septoria tritici Resistance Sou
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Session 6C — L. Gilchrist et al.
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Session 6C — L. Gilchrist et al.
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140 Selecting Wheat for Resistance
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Session 6C — R.M. Gonzalez I., S.
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Session 6C — R.M. Gonzalez I., S.
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Session 6C — R. Loughman, R.E. Wi
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148 Field Resistance of Wheat to Se
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150 Using Precise Genetic Stocks to
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Session 6C — C.M. Ellerbrook, V.
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154 Evaluating Triticum durum x Tri
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156 Sources of Resistance to Septor
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Session 6C — H. Toubia-Rahme and
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160 Partial Resistance to Stagonosp
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Session 6C — C.G. Du, L.R. Nelson
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Session 6C — D.E. Fraser, J.P. Mu
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Session 6C — C.G. Du, L.R. Nelson
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Session 6C — M. Mincu 168 Arcsin
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170 Comparison of Greenhouse and Fi
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Session 6C — S.L. Walker, S. Leat
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Session 6D — L.N. Jørgensen, K.E
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176
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Concluding Remarks — Z. Eyal 178
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184 Dr. Patrice Halama Professor In
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186 Dr. Hala Toubia-Rahme Research
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