“…A recent study identified two major episodes of HGT events during the evolution of streptophytes, corresponding to the early evolution of streptophyte algae and the origin of embryophytes, respectively. 64 Phylogenomics indicates the common ancestor of Zygnematophyceae and embryophytes acquired a LPR1-type MCO from soil bacteria during the first episode, corroborating previous notions that overcoming the challenges of plant terrestrialization profoundly benefited from HGT events. 52 , 55 Although a function of LPR1 in root Pi sensing has been established in Arabidopsis , 15 , 16 , 18 , 20 , 21 , 31 which is likely conserved in the tracheophyte lineage (vascular plants) as recently reported for rice, 46 , 47 the biological role of LPR1-like ferroxidases for Pi nutrition in the bryophyte lineage (nonvascular plants) and in extant Zygnematophyceae algae remains an open question.…”