Table 2.

Studies indicating the presence of a species-specific association between bacterial community and phytoplankton species and the type of experimental conditions.

Experimental conditions	Key findings	References
In natural environment	Bloom of Lingulodinium polyedrum (dinoflagellates) accompanied by shift in bacterial community and enzyme activity.	[89]
	There was a shift in bacterial diversity depending on whether toxin-producing Pseudo-nitzschia (diatom) species was dominated the algal bloom.	[90]
	Algal toxins can modify the structure of the bacterial community, although other factors such as algal biomass and nutrient concentrations can also contribute to the changes.	[91]
	Phytoplankton bloom and other related environmental variables influenced the composition of the bacterial community.	[92]
	Unique bacteria assemblage observed with blooms of Cochlodinium (Margalefidinium) polykrikoides (dinoflagellate).	[93]
	Unique bacteria assemblage observed with blooms of cosmopolitan diatom species Thalassiosira and Chaetoceros.	[94]
In microcosm experiment	Two phylotypes affiliated with Cryomorpahceae and Flavobacteriaceae of Bacteroidetes largely appeared in a microcosm dominated by phytoflagellates, and other two phylotypes (together with Alphaproteobacteria (Roseobacter) and Gammaproteobacteria (Methylophaga)) affiliated with Flavobacteriaceae were characteristically found in diatom-dominated microcosm.	[87]
In mesocosm experiment	The dominance of the diatom species Thalassiosira coincided with decreased bacterial abundance and shift in bacterial community composition.	[80]
	There could be species-specific responses of phytoplankton to bacteria signal molecules.	[95]
In laboratory experiments	The extracellular polymeric substance (EPS) of the bacterium Variovorax paradoxus promoted the growth of the green microalgae Tetradesmus obliquus and Coelastrella sp., and the EPS collected from T. obliquus promoted the growth of the bacterium V. paradoxus but the EPS collected from Coelastrella sp. did not promote the growth of the bacterium.	[96]
	The flavobacterium K. algicida releases a protease with a mass of >30 kDa that acts against a subset of diatoms (Skeletonema, Thalassiosira, and Phaeodactylum) but not Chaetoceros.	[97]
	S. costatum is susceptible to the lysis of K. algicida while Chaetoceros didymus was resistant.	[98]
	There was deterministic type of association between P. globosa and the bacterial assemblage, with species-specific and beneficial interactions.	[99]
	Bacterial transplant experiments showed the bacteria are mutualistic to their native hosts but they become commensal or parasitic when they are introduced into foreign hosts.	[77]
	6 strains of marine diatoms exhibited lower complexity of satellite bacterial assemblages compared to bacterial assemblages in the natural environment, and each algal culture characterized by a distinct satellite assemblage.	[100]
	The bacterial genera Marinobacter and Bolneola dominated in the dinoflagellate Prorocentrum donghaiense (non-toxic) and Karenia mikimotoi (toxic), respectively, whereas the genera Loktanella and Roseivirga, and Alteromonas, Methylophaga and Thalassospira specifically present in P. donghaiense and K. mikimotoi according to their respective order.	[101]
	Non-axenic cultures of phytoplankton harbour bacterial communities where S. costatum (diatom), P. tricornutum (diatom) and Dunaliella bardawil (green alga) were dominated by Marivita (∼80 %), Dinorseobacter (∼47 %) and Halomonas (∼87 %), respectively.	[102]
	Isolates of the dinoflagellate karlodinium veneficum constituted persistently similar bacterial assemblage regardless of the various geographic locations the microalgae isolated.	[103]