WormMine: AnatomyTerm WBbt:0003664

• Definition: Neuron class of one pharyngeal motor neuron/interneuron.
• Name: MI neuron
• Primary Identifier: WBbt:0003664
• Synonym: lineage name: ABaraappaaa

1 Children

Definition	Name	Synonym	Primary Identifier
nucleus of pedigree ABaraappaaa	ABaraappaaa nucleus		WBbt:0002299

3 Expression Clusters

Regulated By Treatment	Description	Algorithm	Primary Identifier
	Single-cell RNA-Seq cell group 59_0 expressed in neuron.	scVI 0.6.0	WBPaper00065841:59_0
	Transcripts enriched in MI according to single cell RNAseq.	Genes that pass the Bonferroni threshold for multiple comparisons (q < 0.05) are significantly enriched.	WBPaper00061651:MI_enriched
	Single-cell RNA-Seq cell group 139 expressed in: MI.	CellRanger, DecontX, Monocle3, Louvain algorithm.	WBPaper00065623:139

41 Expression Patterns

• Primary Identifier: Expr15590

• Primary Identifier: Expr11755
• Remark: Isoform 1b.1

• Primary Identifier: Expr13039

• Primary Identifier: Expr8673
• Remark: Picture: Fig 3.
• Pattern: Expression in the alimentary canal: Strong and consistent expression in anterior arcades, posterior arcades, M1, B cell. Weak or rare expression in intestine. Expression in the nervous system: Amsh, CEPsh, CEPso, ILso, OLso, Phso, DVC, MI. Expression in the reproductive system: In adult stage, expressed in gonad sheath, uterus, vulva(low), spermatheca, Sp-ut valve. In developing larva stage, expressed in uterus, vulva, spermatheca, Sp-ut valve. inx-5 first appears in the developing hypodermis at bean stage and then in the excretory cell at three-fold stage.

• Primary Identifier: Expr15442

• Primary Identifier: Expr12805
• Pattern: C10C6.7 expression is visible in nine cells: interneuron RIS; pharyngeal neurons M1, M2, Motor-interneuron, an unidentified pair of pharyngeal neurons and an unidentified pair of sensory neurons.

• Primary Identifier: Expr15558

• Primary Identifier: Expr15560

• Primary Identifier: Expr9325
• Pattern: Synaptogyrin is expressed in all 26 GABAergic neurons including also RMER and most though not all other neurons. Synaptogyrin is absent in amphids and phasmids and can be detected in non-neuronal glial-like sheath cells in adult worms. The cephalic neurons CEPDR/L and CEPVR/L and amphid-associated sheath cells CEPshDR/L, CEPshVR/L were tentatively positive. Several other neurons that could be tentatively identified in the anterior part are MI, M4, I4, AVL, AIY, RIS, I5, M3R/L, and in the posterior part DVA, AS11, ALNR/L, DVC, DVB, PQR, DA9 (characteristic axonal process denoted by arrowhead), VD13, DD6, VD12. Of these, AVL, RIS, VD13, DD6 and VD12 are GABAergic based on the colocalization with the unc-47p::GFP reporter. In addition, IL neurons were tentatively identified in the anterior (IL*). Synaptogyrin reporter constructs are also expressed in developing neurons. The expression of sng-1p::YFP is closely associated with the development of the nervous system being absent in the gastrula stage with first fluorescence in neuronal precursor cells and newly-formed neurons in the anterior part during the 1.5-fold stage. In addition, it is also detected transiently in cells in the posterior body at the 1.25-fold and 1.5-fold stage.

• Primary Identifier: Expr1688
• Remark: The cellular expression pattern for nlp-3 fragments was indistinguishable from the cellular expression pattern for nlp-3 subcloned constructs. Transgenic lines were generated by coinjection of the nlp::gfp construct (5070 ng/ul) and lin-15 rescue construct (pJM24,100 ng/ul) into lin-15(n765ts) animals. At least two independent transgenic lines were analyzed for each nlp gene; 5-10 animals were scored per line. 1,1'-Dioctadecyl-3,3,3',3 -tetramethylindodicarbocyanine perchlorate (Molecular Probes) was used to stain amphid and phasmid neurons to facilitate identification.
• Pattern: Expressed in ADF, ASE, ASH, AWB, ASJ, BAG, HSN, I1, I2, I3, I4, MI, M3, NSMR, 3 head neurons, VNC, oocytes, I6, M2, pm1VL, intestine.

• Primary Identifier: Expr15567

• Primary Identifier: Expr15571

• Primary Identifier: Expr15572

• Primary Identifier: Expr15573

• Primary Identifier: Expr822
• Remark: C43H6.9 = glr-7
• Pattern: I3, I2, I6, MI, NSM, I1(?).

• Primary Identifier: Expr15579

• Primary Identifier: Expr823
• Remark: F22A3.3 = glr-8
• Pattern: I1, I2, MC, NSM, M3 (left/right), I3, MI M4, M3 (left/right), I6, M5, BDU, ALM, PLM, URB (left/right)

• Primary Identifier: Expr15583

• Primary Identifier: Expr2937
• Pattern: Both ahr-1:GFP reporters are expressed during embryonic and larval development. Expression is first detected in two cells 260 min after the first cleavage. By midembryogenesis (pre-comma stage), 14 cells express the pJ360 ahr-1:GFP fusion gene. At the 2-fold stage of embryogenesis, two cells express ahr-1:GFP in the tail, and the remaining fluorescing cells are in the forming head. During the first larval stage. ahr-1:GFP is expressed in 28 neurons, several blast cells, and two phasmid socket cells. The neurons that express ahr-1:GFP include ALNR/ALNL, AQR/PQR, AVM/PVM, BDUR/BDUL, PLMR/PLML, PLNR/PLNL, PHCL/PHCR, PVWL/PVWR, RMEL/RMER, SDQR/SDQL, and URXR/URXL. The T.pa, T.ppa, and T.ppp blast cells in the tail express ahr-1:GFP, as do all of their descendents, including the PHso1 and PHso2 phasmid socket cells. ahr-1:GFP is also expressed in the MI and I3 neurons in the pharynx and the G2 and W blast cells. Four additional cells in the head express ahr-1:GFP, tentatively identified as the ASK and RIP neurons.
• Subcellular Localization: The pJ360 construct includes the entire ahr-1 genomic sequence, and transgenic animals express this fusion protein in a subset of neuronal nuclei. The pHT102 transgene lacks most of the ahr-1 coding sequence and labels axons as well as nuclei.

• Primary Identifier: Expr15586

• Primary Identifier: Expr15651

• Primary Identifier: Expr15652

• Primary Identifier: Expr15589

• Primary Identifier: Expr13158

• Primary Identifier: Expr15591

• Primary Identifier: Expr12196
• Pattern: To determine where lite-1 is expressed and identify likely sites of lite-1 function, the authors generated and examined worms carrying one of four transgenes derived from the wild-type lite-1 locus: a genomic fragment (lite-1 genomic), a transcriptional fusion (lite-1prom::gfp), a C-terminal translational fusion (lite-1prom::lite-1::gfp), and an N-terminal translational fusion (lite-1prom::gfp::lite-1). GFP expression was observed in a total of 29 cells: pharyngeal neurons M1, M4, M5, and MI; non-pharyngeal neurons ASK, ADL, ASI, ASH, AVG, AVB, RIM, ADF, PHA, PHB, and PVT; and non-neuronal cells Hyp3 (hypoderm), AMso (amphid socket cells), and PHso (phasmid socket cells). AVB was observed only with the C-terminal fusion transgene, and RIM and ADF were observed only with the transcriptional fusion transgene. lite-1 expression in AVG and PVT was previously reported.

• Primary Identifier: Expr13164
• Pattern: For lgc-38, all expressing cells shown are observed with the 3.5 kb reporter fusion, except for OLL, which only expresses the 3.9 kb fusion; URA expresses both.

• Primary Identifier: Expr15598

• Primary Identifier: Expr12719
• Pattern: acc-1 and acc-2 fosmid reporters show very restricted and non-overlapping expression in the adult nervous system. The acc-1 fosmid reporter is expressed in a subset of cholinergic neurons, including cholinergic neurons in the ventral nerve cord, the retrovesicular ganglion and a few head neurons (including the SMD, RMD motor neurons, the AVA and AVE command interneurons and the SAA neurons). A small number of glutamatergic neurons also express acc-1 (including the pharyngeal neurons MI and M3, the PLM neurons and an unidentified neuronal pair in the lateral ganglion).

• Primary Identifier: Expr11622
• Pattern: Expression of ceh-34::gfp transgene began during embryogenesis. CEH-34::GFP was localized to the nuclei of expressing cells. During embryonic morphogenesis and larval development and throughout adulthood, expression of the ceh-34::gfp transgene was seen predominantly in pharyngeal cells. The ceh-34::gfp transgene was expressed in all pharyngeal neurons (M4, I1, MI, I3, M3, NSM, MC, I2, I4, I5, I6, M1, M2, and M5), some pharyngeal muscle cells (pm1 and pm2) and pharyngeal epithelial cells (e1 and e3), and some body wall muscles around the anterior pharynx.

11 Life Stages

Remark	Definition	Other Name	Public Name	Primary Identifier
	The whole period of embryogenesis in the nematode Caenorhabditis elegans, from the formation of an egg until hatching.		embryo Ce	WBls:0000003
	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 0-350min after first cleavage at 20 Centigrade. Proliferate from 1 cell to 560 cells. From start of first cleavage until cleavage is over.		proliferating embryo Ce	WBls:0000004
	The C. elegans life stage spanning 520-620min 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 shape of embryo is elongated and tripple fold. A stage between 2-fold embryo and fully-elongated embryo. Also called pretzel embryo or pretzel stage.		3-fold embryo Ce	WBls:0000020
	The C. elegans life stage spanning 420-460min 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 shape of embryo is elongated and fold back 50%. A stage between comma embryo and 2-fold embryo.		1.5-fold embryo Ce	WBls:0000018
	The C. elegans life stage spanning 390-420min 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 shape of embryo looks like a comma. A stage between bean embryo and 1.5-fold embryo.		comma embryo Ce	WBls:0000017
	The C. elegans life stage spanning 460-520min 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 shape of embryo is elongated and double fold. A stage between 1.5-fold embryo and 3-fold embryo.		2-fold embryo Ce	WBls:0000019
	The C. elegans life stage spanning 350-390min 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. Emrbyo elongation started but have not formed comma shape yet. The shape of embryo looks like a lima bean. A stage right before comma embryo. Also called lima embryo or lima bean stage.		bean embryo Ce	WBls:0000016
	The C. elegans life stage spanning 210-350min after first cleavage at 20 Centigrade. Proliferate from 421 cells to 560 cells. The stage before the fast cleavage of cells finishes.		late cleavage stage embryo Ce	WBls:0000014

5 Parents

Definition	Name	Synonym	Primary Identifier
neuron of the pharyngeal nervous system.	pharyngeal neuron		WBbt:0005439
neuron making synapse on an effector (muscle, gland).	motor neuron	motoneuron	WBbt:0005409
posterior segment of pharyngeal corpus.	metacorpus		WBbt:0003711
	interneuron		WBbt:0005113
embryonic cell	ABaraappaa		WBbt:0006636