I have uploaded genomic fasta sequence and GFF3 file into local mysql database using bp_seqfeature_load.pl. Now, I want to extract sequence from position 8966215-8966961 on "+" strand of Chromosome I, and print only the mRNA transcript segment between 8966215-8966961. If there are many isoforms found between these position, print each isoform sequences with name and position as fasta format. Could you please tell me what is the best approach to do it for it. My code does not work well. Thanks

#!/user/bin/perl
use strict;
use warnings;
use Bio::Seq;
use Bio::SeqIO;
use Bio::SeqFeatureI;
use Bio::DB::SeqFeature::Store;
use Bio::DB::SeqFeature::Segment;

my @features;
my $db = Bio::DB::SeqFeature::Store->
    new(-adaptor=> 'DBI::mysql',
        -dsn=> '..',
        -user=> '..',
        -pass=> '..',
    );

my @foo = $db->features(-seq_id =>'I',-start=>'8966215',-end=>'8966961', -strand =>'+1',
                        -type => 'mRNA',
                            );

for my $f(@foo){
    print ">",$->name,"_",$f->start,"_",$f->end,"\n";
    print $f->dna,"\n";
}

exit;