How can I obtain the significantly different taxa data from this Aldex plot ? (Using R)

Question

[ohtang7]

Hello !

I am trying to conduct relative difference comparison test and used Aldex2 package for the first time. (I failed to use Aldex 2 in Qiime2 ....)

As you can see, I finally got this plot in the R but I don't know how to find the specific taxa that are shown as significantly different (maybe red color).

Is there anyone who can suggest me to find the way forward ? (And also, please let me know the difference of black colored dot and gray colored dot)

Any suggestion regarding to my question would be welcomed !!

Thank you in advance.