passages.id: split_5_test_1696_passage
passages.type: progene_text
passages.text: NtSLT1 suppressed spk1 hal4 ( SPK1 / HAL4 which encodes a serine - threonine kinase that regulates TRK1-2 transporters to have high K + / Na + selectivity ) but not ena1 - 4 trk1 - 2 implicating the ENA - independent function to be through TRK1 - 2 .