Table 2.

Comparative proteomics studies of vascular sap collected during stress.

Species	Treatment	Comparative method	Total proteins	Increased abundance	Decreased abundance	Reference
Xylem sap
Solanum lycopersicum	Fusarium oxysporum	1D-DIGE1	N/A2	7	N/A	Rep et al., 2002
		2D-DIGE	33	25	0	Houterman et al., 2007
		Label-free3	285	102	156	Gawehns et al., 2015
Brassica oleracea	Fusarium oxysporum	Label-free	1554 2045	344 615	784 1045	Pu et al., 2016
Glycine max	Fusarium virguliforme	Presence/ Absence	112	66 57	5	Abeysekara and Bhattacharyya, 2014
	Bradyrhizobium japonicum	2D-DIGE	19	4	3	Subramanian et al., 2009
	Phytophthora sojae elicitor			2	0
Brassica napus	Verticillium longisporum	1D-DIGE	N/A	3	N/A	Floerl et al., 2008
Zea mays	Drought	2D-DIGE	39	33	8	Alvarez et al., 2008
	N-supply	2D-DIGE	23	14	9	Liao et al., 2012
Brassica oleracea	NaCl	2D-DIGE	40	22	18	Fernandez-Garcia et al., 2011
Gossypium hirsutum	K-limitation	Label-free	2858	5	41	Zhang et al., 2016
Phloem sap
Hybrid Poplar	Wounding	2D-DIGE	48	2	0	Dafoe et al., 2009
Cucurbita maxima	Wounding	ICPL9	300	2510 3911	2610 1211	Gaupels et al., 2012
Cucumis sativus	NaCl	iTRAQ12	745	2513 1214	4413 5314	Fan et al., 2015
Brassica napus	Fe-limitation	2D-DIGE	26315	19	22	Gutierrez-Carbonell et al., 2015
Oryza sativa	Brown Planthopper	iTRAQ	238	816 1017	2616 1317	Du et al., 2015
Cucumis melo	Melon Necrotic Spot Virus	2D-DIGE	104615	13	9	Serra-Soriano et al., 2015
Arabidopsis thaliana	Pseudomonas syringae	Label-free	564	16	46	Carella et al., 2016

¹Difference gel electrophoresis, ²not applicable, ³label-free quantitative proteomics, ⁴cultivar resistant to Fusarium oxysporum, ⁵cultivar susceptible to F. oxysporum, ⁶host-derived, ⁷pathogen-derived, ⁸peptide fragments, ⁹isotope-coded protein labeling, ¹⁰collected 3 h post wounding, ¹¹collected 24 h post wounding, ¹²isobaric tags for relative and absolute quantitation, ¹³salt-intolerant cultivar, ¹⁴salt-tolerant cultivar, ¹⁵spots on protein gel, ¹⁶cultivar susceptible to insects, ¹⁷cultivar resistant to insects.