Abstract
Abstract A lternaria fungi are important plant pathogens. Here, we identified three species new to the J apanese mycoflora: A lternaria celosiae , A lternaria crassa and A lternaria petroselini . We proposed a new name for A . celosiae ( E . G . S immons & H olcomb) L awrence, P ark & P ryor, a later homonym of A . celosiae ( T assi) O . S ăvul. To characterize these and a fourth morphological taxon, A lternaria alstroemeriae , which was recently added to J apan's mycoflora, an integrated species concept was tested. We determined the host range of each isolate using inoculation tests and analysed its phylogenetic position using sequences of the internal transcribed spacer r DNA . The pathogenicity of our A . alstroemeriae isolate was strictly limited to A lstroemeria sp. ( A lstroemeriaceae), but the species was phylogenetically indistinguishable from other small‐spored A lternaria . A lternaria celosiae on C elosia argentea var. plumosa ( A maranthaceae) was also pathogenic to A maranthus tricolor , to A lternanthera paronychioides and weakly to G omphrena globosa (all Amaranthaceae) and formed a clade with the former N imbya celosiae . A lternaria crassa on D atura stramonium ( S olanaceae) was also pathogenic to B rugmansia × candida and C apsicum annuum in S olanaceae, but not to other confamilial plants; phylogenetically it belonged to a clade of large‐spored species with filamentous beaks. Morphological similarity, phylogenetic relationship and experimental host range suggested that A . crassa , A lternaria capsici and A lternaria daturicola were conspecific. A lternaria petroselini on P etroselinum crispum ( A piaceae) was pathogenic to five species in the tribe A pieae as well as representatives of B upleureae, C oriandreae, S eliaeae and S candiceae in A piaceae. Both phylogeny and morphology suggested conspecificity between A . petroselini and A lternaria selini .
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Claims 9
Claim · model-written summary
The A. alstroemeriae isolate was pathogenic only to Alstroemeria sp.
Verbatim
e0“The pathogenicity of our A . alstroemeriae isolate was strictly limited to A lstroemeria sp. ( A lstroemeriaceae)”
Claim · model-written summary
A. celosiae from Celosia argentea var. plumosa was pathogenic to Amaranthus tricolor.
Verbatim
e0“A lternaria celosiae on C elosia argentea var. plumosa ( A maranthaceae) was also pathogenic to A maranthus tricolor”
Claim · model-written summary
A. celosiae was pathogenic to Alternanthera paronychioides.
Verbatim
e0“was also pathogenic to A maranthus tricolor , to A lternanthera paronychioides and weakly to G omphrena globosa”
t0“Alternaria”
t1“A lternaria celosiae on C elosia argentea var. plumosa ( A maranthaceae)”
Claim · model-written summary
A. celosiae was weakly pathogenic to Gomphrena globosa.
Verbatim
e0“was also pathogenic to A maranthus tricolor , to A lternanthera paronychioides and weakly to G omphrena globosa”
t0“Alternaria”
t1“A lternaria celosiae on C elosia argentea var. plumosa ( A maranthaceae)”
Claim · model-written summary
A. crassa from Datura stramonium was pathogenic to Brugmansia × candida.
Verbatim
e0“A lternaria crassa on D atura stramonium ( S olanaceae) was also pathogenic to B rugmansia × candida and C apsicum annuum in S olanaceae, but not to other confamilial plants”
Claim · model-written summary
A. crassa was pathogenic to Capsicum annuum.
Verbatim
e0“A lternaria crassa on D atura stramonium ( S olanaceae) was also pathogenic to B rugmansia × candida and C apsicum annuum in S olanaceae, but not to other confamilial plants”
Claim · model-written summary
A. crassa was not pathogenic to other confamilial plants.
Verbatim
e0“A lternaria crassa on D atura stramonium ( S olanaceae) was also pathogenic to B rugmansia × candida and C apsicum annuum in S olanaceae, but not to other confamilial plants”
Claim · model-written summary
A. petroselini on Petroselinum crispum was pathogenic to five Apiaceae species in tribe Apieae.
Verbatim
e0“A lternaria petroselini on P etroselinum crispum ( A piaceae) was pathogenic to five species in the tribe A pieae”
Claim · model-written summary
A. petroselini was pathogenic to representatives of four further Apiaceae tribes.
Verbatim
e0“A lternaria petroselini on P etroselinum crispum ( A piaceae) was pathogenic to five species in the tribe A pieae as well as representatives of B upleureae, C oriandreae, S eliaeae and S candiceae in A piaceae”