CORRECTED-BUZZ-Marks and Spencer: Bottom of FTSE on Barclays downgrade

(Corrects year in fourth bullet to 2018)

** Retailer Marks and Spencer's shares down 2.7 pct,bottom of the FTSE 100, after Barclays cuts rating on coto "underweight" from "equalweight", PT to 290p from 410p

** Analysts say co's turnaround plan, which involves cuttingpricing on clothing lines, could keep general merchandise LFLs"deep in negative territory" in FY17 and FY18

** Now see GM LFLs down 5 pct in FY17, 2 pct in FY18, 2-3pctage points below their previous estimates

** Analysts add strengthening dollar and higher cottonprices will hit gross margins by 130 basis points in 2018

** Stock scores 3 out of a possible 100 on StarMine's ARMmodel, a measure of change in analyst sentiment, indicatingsellside strongly bearish

** Turnaround plan was followed by a raft of brokerdowngrades earlier in the year

** Shares bottom of the Stoxx 600 Retail Index,which is down 0.3 pct (venkateshasoumithri.mamidipudi.thomsonreuters.com@reuters.net)