test
node1
TO:0000357
plant growth and
development trait
node2
TO:0000928
plant structure
growth and
development trait
node1->node2
node3
TO:0000926
multi-tissue plant
structure growth and
development trait
node2->node3
node4
TO:0000927
plant organ growth
and development trait
node3->node4
node5
TO:0000387
plant trait
node5->node1