@article{PAR00006450, title = {{E}thylene stimulation of latex yield depends on the expression of a sucrose transporter ({H}b{SUT}1{B}) in rubber tree ({H}evea brasiliensis)}, author = {{D}usotoit-{C}oucaud, {A}. and {K}ongsawadworakul, {P}. and {M}aurousset, {L}. and {V}iboonjun, {U}. and {B}runel, {N}. and {P}ujade-{R}enaud, {V}. and {C}hrestin, {H}erv{\'e} and {S}akr, {S}.}, editor = {}, language = {{ENG}}, abstract = {{H}evea brasiliensis is an important industrial crop for natural rubber production. {L}atex biosynthesis occurs in the cytoplasm of highly specialized latex cells and requires sucrose as the unique precursor. {E}thylene stimulation of latex production results in high sugar flow from the surrounding cells of inner bark towards the latex cells. {T}he aim of this work was to understand the role of seven sucrose transporters ({H}b{SUT}s) and one hexose transporter ({H}b{HXT}1) in this process. {T}wo {H}evea clones were used: {PB}217 and {PB}260, respectively described as high and low yielding clones. {T}he expression pattern of these sugar transporters ({H}b{SUT}s and {H}b{HXT}1) was monitored under different physiological conditions and found to be maximal in latex cells. {H}b{SUT}1, one of the most abundant isoforms, displayed the greatest response to ethylene treatment. {I}n clone {PB}217, ethylene treatment led to a higher accumulation of {H}b{SUT}1{B} in latex cells than in the inner bark tissues. {C}onversely, stronger expression of {H}b{SUT}1{B} was observed in inner bark tissues than in latex cells of {PB}260. {A} positive correlation with {H}b{SUT}1{B} transcript accumulation and increased latex production was further supported by its lower expression in latex cells of the virgin clone {PB}217.}, keywords = {ethylene ; latex yield ; laticifers ; sugar transporters ; {COTE} {D}'{IVOIRE}}, booktitle = {}, journal = {{T}ree {P}hysiology}, volume = {30}, numero = {12}, pages = {1586--1598}, ISSN = {0829-318{X}}, year = {2010}, DOI = {10.1093/treephys/tpq088}, URL = {https://www.documentation.ird.fr/hor/{PAR}00006450}, }