Two new species of Pustula, P. cancriniae and P. xinyuanensis associated with Cancrinia discoidea and Convolvulus gortschakovii, respectively, are described based on morphological and molecular characters. They were placed in Pustula based on the following morphological characters: primary sporangia with an overall thickened wall, secondary sporangia with laterally thickened annulus, and oospores with reticulate wall ornamentation. In phylogenetic analysis inferred from the cox2 mtDNA region, P. xinyuanensis and P. cancriniae formed two independent lineages, apart from other known species of Pustula. Both morphological and molecular evidence confirmed the placement of the two species in Pustula and showed its relations with similar species in the genus. Moreover, this is the first record of Pustula on Convolvulaceae in the world.
Bibliographical noteFunding Information:
We thank Dr. Xiaolan He (Sichuan Academy of Agricultural Sciences) for helpful suggestions to improve the manuscript and Dr. Xahidin Hurnisa (College of Life Sciences, Xinjiang University) for the help in SEM examination. This research was supported by the National Natural Science Foundation of China (Nos.31360007, 31460008) and Excellent Talents Program in Xinjiang Production and Construction Corps. YJC was supported by the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT & Future Planning (2016R1C1B2008013), Republic of Korea.
© 2018, German Mycological Society and Springer-Verlag GmbH Germany, part of Springer Nature.
- Desert plant
- White blister rusts
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Agricultural and Biological Sciences (miscellaneous)