OG-12一段话的理解

OG-12的末段感觉意思无法准确把握，特别是下面的划线部分，请帮我解释一下啊，多谢。

Such a hierarchy may also exist in plants. Oligosac-

charins are fragments of the cell wall released by

enzymes: different enzymes release different oligosac-

charins. There are indications that pleiotropic plant

hormones may actually function by activating the

(40) enzymes that release these other, more specific chemical

messengers from the cell wall.

等牛牛来解释啊？

HELP！

But what is the referent of the pronoun "these other"?

Confusing!

these other和more specific 共同修饰chemical messengers from the cell wall。

我认为，那些多向性的激素也应该是chemical messengers，所以有other一说。