WormMine: ExpressionPattern Expr9088

• Pattern: Expression of GFP::LGG-2 and GFP::LGG-1 is first detected early during embryogenesis (before the 50 cell stage) with both a punctate and a diffuse cytoplasmic staining. At the beginning of organogenesis the number of puncta diminishes and the signal becomes mainly restricted to the pharynx, intestine and hypodermis. After hatching and during larval development GFP::LGG-1 expression has been reported as a diffuse signal predominantly in the lateral hypodermal seam cells and in the pharynx. Similarly, the expression of GFP::LGG-2 is high in the seam cells and pharynx and also in the nervous system, especially in some head and tail neurons and the neuron cell bodies in the ventral nerve cord. Its expression is mainly diffuse in the cytoplasm but a few dots are often detected in neuron cell bodies and seam cells. In adults, the tissue distribution of GFP::LGG-2 and GFP::LGG-1 remains diffuse but becomes more ubiquitous in particular the signal is detected in the whole hypodermis, the muscles, the vulva and the spermatheca. Together these data show that lgg-1 and lgg-2 present widely overlapping expression patterns and suggests the presence of numerous autophagosomal structures during embryogenesis.
• Primary Identifier: Expr9088
• Remark: Picture: Fig 2.
• Subcellular Localization: Punctate and diffuse cytoplasmic stainings were observed in early embryos.In larva stages, its expression is mainly diffuse in the cytoplasm but a few dots are often detected in neuron cell bodies and seam cells.

7 Anatomy Terms

Definition	Name	Synonym	Primary Identifier
A chain of very large cuboidal cells forming a wide central lumen in which food arrives from the posterior pharynx, is digested, and from which waste products proceed to the rectum. Intestinal rings form in groups of two and four cells surrounding the common lumen; thus the epithelium is only one cell deep at any point, with neighboring cells firmly secured to their neighbors by apical adherens junctions. These cells have very large nuclei and many large vacuoles, yolk granules, and other inclusions; the latter increase in number and electron density as the animal ages.	intestine	gut	WBbt:0005772
female genital.	vulva		WBbt:0006748
an accordion-like tube that contains sperm and is the site of oocyte fertilization.	spermatheca		WBbt:0005319
Epidermal layer.	hypodermis	epidermis	WBbt:0005733
the feeding organ, a neuro-muscular pump in the head of the animal, used to ingest food, bacteria suspended in liquid, filter them out, grind them up and transport posteriorly into the instestine.	pharynx	esophagus	WBbt:0003681
Major cell type of nervous tissue, specialized for transmission of information in the form of patterns of impulses.	neuron	neurone	WBbt:0003679
Contractile cell that makes up muscle tissue.	muscle cell		WBbt:0003675

1 Genes

WormBase Gene ID	Gene Name	Sequence Name	Organism
WBGene00002981	lgg-2	ZK593.6	Caenorhabditis elegans

9 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The second stage larva. At 25 Centigrade, it ranges 25.5-32.5 hours after fertilization, 11.5-18.5 hours after hatch.		L2 larva Ce	WBls:0000027
	The fourth stage larva. At 25 Centigrade, it ranges 40-49.5 hours after fertilization, 26-35.5 hours after hatch.		L4 larva Ce	WBls:0000038
	The first stage larva. At 25 Centigrade, it ranges 14-25.5 hours after fertilization, 0-11.5 hours after hatch.		L1 larva Ce	WBls:0000024
	The stage that begins when a C.elegans individual is fully-developed and has reached maturity.		adult Ce	WBls:0000041
	The third stage larva. At 25 Centigrade, it ranges 32.5-40 hours after fertilization, 18.5-26 hours after hatch.		L3 larva Ce	WBls:0000035
	The C. elegans life stage spanning 620-800min(hatch) after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. A stage after elongation is over. The last stage of embryogenesis. Also called pre-hatched embryo, late embryo or morphogenetic embryo.		fully-elongated embryo Ce	WBls:0000021
	The C. elegans life stage spanning 350-620min after first cleavage at 20 Centigrade. Cell number remains at ~560 cells, with some new cells generated and some cells go through programmed cell death. The stage that embryo starts elongation until elongation is over.		elongating embryo Ce	WBls:0000015
	The C. elegans life stage spanning 290-350min after first cleavage at 20 Centigrade. Proliferate from 421 cells to 560 cells. The stage when embryo just finished gastrulation and is enclosing.		enclosing embryo Ce	WBls:0000013
	The C. elegans life stage spanning 100-290min after first cleavage at 20 Centigrade. Proliferate from 28 cells to 421 cells. Referring to the whole period of gastrulation.		gastrulating embryo Ce	WBls:0000010