(Poaceae), a New Species from the North-western Qinghai-Tibetan Plateau, China

Overview

Journal PhytoKeys

Date 2024 Nov 21

PMID 39568671

Authors

Yong-Chao Zhang

Xiao-Xing Wei

Yan Qin

Yong Liu

Shu-Zhen Zhang

Zhi-Feng Jia

Wen-Hui Liu

Affiliations

Soon will be listed here.

Abstract

A new species from China, Y.C. Zhang, is described and illustrated herein, based on morphological characters and molecular phylogenetic analysis. The taxonomic descriptions of and the comparison with related species are presented. The taxonomic distinctiveness of this new species was inferred by Maximum Likelihood (ML) analysis and Bayesian phylogenetic analysis, based on the complete chloroplast genome sequence. It is assigned to the Elymus section and bears similarity to Elymusnutans Griseb. However, it can be easily distinguished from other species by its compound spike, in contrast to the simple spike inflorescence typical of those species. The compound spike is characterised by rhachillas that are extended at the base of the main axis, giving rise to 3-6 mini-spike-like branches. Notably, these branches significantly increase in length from the top towards the bottom of the compound spike. In the molecular phylogeny, from Qinghai, north-western China, is phylogenetically positioned as a distinct lineage. The lineage comprising from Sichuan, east of the Tibetan Plateau and from the Himalayas forms a sister group to , suggesting that these three species share a common ancestor that is distinct from the lineage leading to from Gansu, north of the Tibetan Plateau.

References

. On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life. Br Foreign Med Chir Rev. 2018; 25(50):367-404. PMC: 5184128. View

Poursarebani N, Seidensticker T, Koppolu R, Trautewig C, Gawronski P, Bini F . The Genetic Basis of Composite Spike Form in Barley and 'Miracle-Wheat'. Genetics. 2015; 201(1):155-65. PMC: 4566260. DOI: 10.1534/genetics.115.176628. View

Remizowa M, Rudall P, Choob V, Sokoloff D . Racemose inflorescences of monocots: structural and morphogenetic interaction at the flower/inflorescence level. Ann Bot. 2012; 112(8):1553-66. PMC: 3828938. DOI: 10.1093/aob/mcs246. View

Benlloch R, Berbel A, Serrano-Mislata A, Madueno F . Floral initiation and inflorescence architecture: a comparative view. Ann Bot. 2007; 100(3):659-76. PMC: 2533596. DOI: 10.1093/aob/mcm146. View

Chen L, Luo J, Jin M, Yang N, Liu X, Peng Y . Genome sequencing reveals evidence of adaptive variation in the genus Zea. Nat Genet. 2022; 54(11):1736-1745. DOI: 10.1038/s41588-022-01184-y. View

Kellogg E . Genetic control of branching patterns in grass inflorescences. Plant Cell. 2022; 34(7):2518-2533. PMC: 9252490. DOI: 10.1093/plcell/koac080. View

Nguyen L, Schmidt H, von Haeseler A, Minh B . IQ-TREE: a fast and effective stochastic algorithm for estimating maximum-likelihood phylogenies. Mol Biol Evol. 2014; 32(1):268-74. PMC: 4271533. DOI: 10.1093/molbev/msu300. View

Pan R, Hu H, Xiao Y, Xu L, Xu Y, Ouyang K . High-quality wild barley genome assemblies and annotation with Nanopore long reads and Hi-C sequencing data. Sci Data. 2023; 10(1):535. PMC: 10415357. DOI: 10.1038/s41597-023-02434-2. View

Kellogg E, Camara P, Rudall P, Ladd P, Malcomber S, Whipple C . Early inflorescence development in the grasses (Poaceae). Front Plant Sci. 2013; 4:250. PMC: 3721031. DOI: 10.3389/fpls.2013.00250. View

10.

Gao X, Liang W, Yin C, Ji S, Wang H, Su X . The SEPALLATA-like gene OsMADS34 is required for rice inflorescence and spikelet development. Plant Physiol. 2010; 153(2):728-40. PMC: 2879775. DOI: 10.1104/pp.110.156711. View

11.

. Database Resources of the National Genomics Data Center, China National Center for Bioinformation in 2024. Nucleic Acids Res. 2023; 52(D1):D18-D32. PMC: 10767964. DOI: 10.1093/nar/gkad1078. View

12.

Liu Q, Ge S, Tang H, Zhang X, Zhu G, Lu B . Phylogenetic relationships in Elymus (Poaceae: Triticeae) based on the nuclear ribosomal internal transcribed spacer and chloroplast trnL-F sequences. New Phytol. 2006; 170(2):411-20. DOI: 10.1111/j.1469-8137.2006.01665.x. View

13.

He Z, Zhai W, Wen H, Tang T, Wang Y, Lu X . Two evolutionary histories in the genome of rice: the roles of domestication genes. PLoS Genet. 2011; 7(6):e1002100. PMC: 3111475. DOI: 10.1371/journal.pgen.1002100. View

14.

Li Y, Fu X, Zhao M, Zhang W, Li B, An D . A Genome-wide View of Transcriptome Dynamics During Early Spike Development in Bread Wheat. Sci Rep. 2018; 8(1):15338. PMC: 6194122. DOI: 10.1038/s41598-018-33718-y. View

15.

Wang L, Ming L, Liao K, Xia C, Sun S, Chang Y . Bract suppression regulated by the miR156/529-SPLs-NL1-PLA1 module is required for the transition from vegetative to reproductive branching in rice. Mol Plant. 2021; 14(7):1168-1184. DOI: 10.1016/j.molp.2021.04.013. View

﻿ (Poaceae), a New Species from the North-western Qinghai-Tibetan Plateau, China

(Poaceae), a New Species from the North-western Qinghai-Tibetan Plateau, China