Reveal the mystery of the origin of early terrestrial plants.

The origin and landing of early terrestrial plants has been a scientific issue of concern and interest to paleontologists and evolutionists, and has been the subject of scientific controversy and mystery for many years.
Although fossil evidence can provide the most direct and accurate evidence of species evolution, due to the lack of early fossil evidence of the origin of terrestrial plants and the rarity of complete fossils, it is extremely difficult to accurately infer the origin time of early terrestrial plants and compare the characteristics of plant morphology and to infer the evolutionary order.
, Harald Schneider, a researcher in the macro-evolution research group at the Xishuangbanna Tropical Botanical Garden of the Chinese Academy of Sciences, led a research paper with Philip Donoghue, Professor at the University of Bristol, and Philip Donoghue, Professor of the University of Bristol, and published online in PNAS, to shed new ideas and methods for solving this scientific problem.
the study accurately answered the question of the origin of early land plants by analyzing transcription data from 103 species and dozens of fossil evidence.
the main conclusionof of the paper: (1) The results show that the earliest terrestrial plants originated in the Cambrian period about 500 million years ago (about 57-500 million years ago), the middle and early Otau period (about 515-473 million years ago), the origin time About 100 million years earlier than previous fossil estimates, the crown groups of the tube plants appeared in the late Otau period to the late Chio period, and (2) the group-like relationships of early land plants (e.g. whether moss plants were monoline) and the size of the data matrix had little effect on the estimation of the origin time. Seven alternate hypotheses in
data analysis: (A) single-source moss plants; (B) moss-sister branch and tube plant steaming plants are sister branches; (C) moss, moss and horn moss are, in turn, sister branches of veto plants; (D) Moss-Moss sister branch and horned moss-species The sister branch of the tube plant is the sister branch; (E) the horn moss, moss and moss are the sister branches of the tube plant in turn; (F) the moss, the horn moss and the moss are the sister branches of the maintenance plant in turn, and the (G) the sister branch of the moss-horned moss is the sister branch.
the importance of this study is reflected not only in the accurate estimation of the origin of early terrestrial plants, but also in understanding the evolutionary relationship between plants and fauna in early terrestrial ecosystems, and in the field of biogeochemistry research.
published the paper and was reprinted and reported by Science and the BBC website.
.