Differential gene expression in response to Fusarium oxysporum infection in resistant and susceptible genotypes of flax (Linum usitatissimum L.)

Table 5 Gene ontology analysis for the top 100 downregulated genes in the flax genotypes susceptible to Fusarium oxysporum (AP5 and TOST)

GO category	Term	Observed number of genes	Expected number of genes	p-value	FDR
GO:0071555	cell wall organization	21	2.32	4.6E-15	7.1E-11
GO:0071554	cell wall organization or biogenesis	22	2.78	1.8E-14	1.0E-10
GO:0045229	external encapsulating structure organization	21	2.52	1.9E-14	1.0E-10
GO:0005576	extracellular region	26	5.10	6.7E-13	2.6E-09
GO:0005618	cell wall	15	2.89	6.5E-08	1.7E-04
GO:0030312	external encapsulating structure	15	2.89	6.5E-08	1.7E-04
GO:0048046	apoplast	11	1.53	1.1E-07	2.4E-04
GO:0016762	xyloglucan:xyloglucosyl transferase activity	4	0.12	3.2E-06	5.1E-03
GO:0031225	anchored component of membrane	8	0.89	3.5E-06	5.1E-03
GO:0016757	transferase activity, transferring glycosyl groups	13	2.81	3.7E-06	5.1E-03
GO:0005976	polysaccharide metabolic process	12	2.53	3.9E-06	5.1E-03
GO:0042546	cell wall biogenesis	7	0.72	4.3E-06	5.1E-03
GO:0005372	water transmembrane transporter activity	4	0.16	4.5E-06	5.1E-03
GO:0015250	water channel activity	4	0.16	4.5E-06	5.1E-03
GO:0031226	intrinsic component of plasma membrane	10	1.82	1.0E-05	1.1E-02
GO:0031224	intrinsic component of membrane	39	20.87	1.8E-05	1.7E-02
GO:0046658	anchored component of plasma membrane	6	0.57	2.5E-05	2.3E-02
GO:0005975	carbohydrate metabolic process	18	6.30	2.9E-05	2.5E-02
GO:0004553	hydrolase activity, hydrolyzing O-glycosyl compounds	10	2.12	3.8E-05	3.1E-02
GO:0009505	plant-type cell wall	7	1.05	4.9E-05	3.7E-02
GO:0010411	xyloglucan metabolic process	4	0.22	4.9E-05	3.7E-02
GO:0030570	pectate lyase activity	3	0.09	6.9E-05	4.7E-02
GO:0016798	hydrolase activity, acting on glycosyl bonds	10	2.29	7.0E-05	4.7E-02

Note: One gene can belong to more than one GO category. FDR – false discovery rate

ISSN: 1471-2229