Table IV.

Groups of functionally related genes up-regulated in shoots after K+ resupply

GroupsAGLCodeAnnotationRankaCategory
ExtensinAt2g43150Putative extensin21Cell wall
Minimal P-valueEvidencebAt4g33970Extensin-like protein34Cell wall
1.22E−07KAt4g38080Extensin related90Cell wall
At4g08370Extensin-like protein96Cell wall
At3g54590Extensin precursor-like protein115Cell wall
Aabinogalactan; FasciclinAt5g44130FLA13Fasciclin-like arabinogalactan-protein, putative127Cell wall
Minimal P-valueEvidenceAt3g61640AGP20Arabinogalactan-protein133Cell wall
1.10E−05K (2x)At4g12730FLA2Fasciclin-like arabinogalactan-protein156Cell wall
At1g03870FLA9Fasciclin-like arabinogalactan-protein170Cell wall
At5g10430AGP4Arabinogalactan-protein182Cell wall
AquaporinAt3g16240TIP2,1Delta tonoplast integral protein20Transport
Minimal P-valueEvidenceAt3g26520TIP1,2Gamma tonoplast intrinsic protein89Transport
1.31E−05TAt4g35100PIP2,7Plasma membrane intrinsic protein106Transport
At4g01470TIP1,3Putative water channel protein513Transport
At1g52180TIPAquaporin, putative538Transport
At2g37170PIP2,2Aquaporin (plasma membrane intrinsic protein 2B)544Transport
At2g36830TIP1,1Putative aquaporin (tonoplast intrinsic protein gamma)703Transport
At3g04090SIP1,1Hypothetical protein712Transport
At4g00430PIP1,4Probable plasma membrane intrinsic protein 1c807Transport
At2g16850PIP2,8Putative plasma membrane intrinsic protein995Transport
At3g53420PIP2,1Plasma membrane intrinsic protein 2a1,217Transport
At2g25810TIP4,1Putative aquaporin (tonoplast intrinsic protein)1,357Transport
Cell WallAt5g49080Putative protein28Cell wall
Minimal P-valueEvidenceAt4g33970Extensin-like protein34Cell wall
2.31E−05MAt2g06850At-XTH4Xyloglucan endotransglycosylase (ext/EXGT-A1)50Cell wall
At5g06640Putative protein59Cell wall
At4g08370Extensin-like protein96Cell wall
Germin-Like Protein FamilyGrowth
Minimal P-valueEvidenceAt1g72610Germin-like protein31Growth
5.68E−05FAt5g20630Germin-like protein80Growth
Plastidial Acyl Carrier ProteinAt4g25050Acyl carrier-like protein58Growth
Minimal P-valueEvidenceAt1g54580ACP2Acyl-carrier protein231Growth
1.32E−04FAt1g54630ACP3Expressed protein486Growth
Plasma MembraneAt4g12420SKU5Pectinesterase (pectin methylesterase) family87
Minimal P-valueEvidenceAt4g02520Glutathione transferase, putative94
2.12E−04GAt4g35100PIP2,7Plasma membrane intrinsic protein (SIMIP)106
At5g65430GRF814-3-3 Protein GF14 kappa123
Cell Wall (sensu Magnoliophyta)Cell wall
Minimal P-valueEvidenceAt4g12420SKU5Pectinesterase (pectin methylesterase) family87Cell wall
2.14E−04GAt5g65430GRF814-3-3 Protein GF14 kappa123Cell wall
  • K+-responsive groups of functionally related genes were identified by iGA based on RP lists of shoot genes sorted for up-regulation over 12 experiments (2 and 6 h K+ resupply, three replicates with two controls each). Significantly affected gene groups up to a FDR of 10% are shown.

  • a Rank within all time point and control RP gene list (n = 12 for shoot data, n = 6 for root data).

  • b Evidence: K, Key words from gene names; T, transporters; M, MAtDB functional classification; F, TAIR gene family; G, GeneOntology annotation.