Expression of the phloem lectin is developmentally linked to vascular differentiation in cucurbits

  title={Expression of the phloem lectin is developmentally linked to vascular differentiation in cucurbits},
  author={Joanne M. Dannenhoffer and Alexander Schulz and Megan I. Skaggs and Dwight E. Bostwick and Gary A. Thompson},
The conducting elements of phloem in angiosperms are a complex of two cell types, sieve elements and companion cells, that form a single developmental and functional unit. During ontogeny of the sieve element/companion cell complex, specific proteins accumulate forming unique structures within sieve elements. Synthesis of these proteins coincides with vascular development and was studied in Cucurbita seedlings by following accumulation of the phloem lectin (PP2) and its mRNA by RNA blot… CONTINUE READING


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