Description

Lolium perenne, common name perennial ryegrass, English ryegrass, winter ryegrass, or ray grass, is a grass from the family Poaceae. It is native to Europe, Asia and northern Africa, but is widely cultivated and naturalised around the world.

The plant is a low-growing, tufted, hairless grass, with a bunching (or tillering) growth habit. The leaves are dark green, smooth and glossy on the lower surface, with untoothed parallel sides and prominent parallel veins on the upper surface. The leaves are folded lengthwise in bud (unlike the rolled leaves of Italian ryegrass, Lolium multiflorum) with a strong central keel, giving a flattened appearance. The ligule is very short and truncated and often difficult to see. The small white auricles grip the stem at the base of the leaf blade. Leaf sheaths at the base are usually tinged pink and hairless. Stems grow up to 90 cm.

The inflorescence is unbranched, with spikelets on alternating sides edgeways-on to the stem. Each spikelet has only a single glume, on the side away from the stem, and between four and 14 florets without awns, unlike Italian ryegrass. The anthers are pale yellow, and the plant flowers from May to November. Perennial ryegrass has a fibrous root system, with thick main roots and thinner lateral branches. Roots are usually arbuscular mycorrhizal.

Whole Genomes

Whole Genome Sequences & Annotations for Lolium perenne

• Lolium perenne MPB_Lper_Kyuss_1697

S genes

Lolium perenne MPB_Lper_Kyuss_1697 S genes

Query	Chromosome	Size(bp)	Coordinates	tBLASTn Hit	tBLASTn %ID	Domain
DUF247I-S	chr1	263434395	38450637-38452229	LpSDUF247-I_chromosome1	100	DUF247
DUF247II-S	chr1	263434395	38193663-38195315	LpSDUF247-II_chromosome1	100	DUF247
HPS10-S	chr1	263434395	38449393-38449510, 38449580-38449713	LpsS_chromosome1	100	-
DUF247I-Z	chr2	347306123	332860175-332861764	LpZDUF247-I_chromosome2	100	DUF247
DUF247II-Z	chr2	347306123	332799119-332800780	LpZDUF247-II_chromosome2	100	DUF247
HPS10-Z	chr2	347306123	332813093-332813199, 332813281-332813425	LpsZ_chromosome2	100	-

Downloads

The Lolium perenne S gene sequences are available in FASTA format.

CDS and Protein (FASTA file)

S-gene_Lolium_perenne

Publications

Byrne SL, Nagy I, Pfeifer M, Armstead I, Swain S, Studer B, Mayer K, Campbell JD, Czaban A, Hentrup S, Panitz F, Bendixen C, Hedegaard J, Caccamo M, Asp T. A synteny-based draft genome sequence of the forage grass Lolium perenne. Plant J. 2015 Nov;84(4):816-26. doi: 10.1111/tpj.13037.

Frei D, Veekman E, Grogg D, Stoffel-Studer I, Morishima A, Shimizu-Inatsugi R, Yates S, Shimizu KK, Frey JE, Studer B, Copetti D. Ultralong Oxford Nanopore Reads Enable the Development of a Reference-Grade Perennial Ryegrass Genome Assembly. Genome Biol Evol. 2021 Aug 3;13(8):evab159. doi: 10.1093/gbe/evab159.

Nagy I, Veeckman E, Liu C, Bel MV, Vandepoele K, Jensen CS, Ruttink T, Asp T. Chromosome-scale assembly and annotation of the perennial ryegrass genome. BMC Genomics. 2022 Jul 12;23(1):505. doi: 10.1186/s12864-022-08697-0.