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    <mxCell id="node2" value="策略：共过表达xylT/xylA/xylB + adhE2于Δack菌株" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#D5E8D4;strokeColor=#82B366;fontSize=13;fontStyle=1;arcSize=8;verticalAlign=middle;align=center;" vertex="1" parent="1">
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    <mxCell id="node3" value="关键改造①：异源表达木糖转运体（xylT）" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#DAE3F3;strokeColor=#6C8EBF;fontSize=12;fontStyle=0;arcSize=8;verticalAlign=middle;align=center;" vertex="1" parent="1">
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    <mxCell id="node4" value="关键改造②：木糖异构酶（xylA）+ 木酮糖激酶（xylB）" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#DAE3F3;strokeColor=#6C8EBF;fontSize=12;fontStyle=0;arcSize=8;verticalAlign=middle;align=center;" vertex="1" parent="1">
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    <mxCell id="node5" value="关键改造③：醛/醇脱氢酶（adhE2）+ 敲除ack" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#DAE3F3;strokeColor=#6C8EBF;fontSize=12;fontStyle=0;arcSize=8;verticalAlign=middle;align=center;" vertex="1" parent="1">
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    <mxCell id="node6" value="结果①：葡萄糖/木糖同步消耗（1.03 vs 1.05 g/L·h），木糖利用率87.3%" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#FFF2CC;strokeColor=#D6B656;fontSize=12;fontStyle=0;arcSize=8;verticalAlign=middle;align=center;" vertex="1" parent="1">
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    <mxCell id="node7" value="结果②：丁醇12 g/L（+275%），得率0.12 g/g，生产力0.17 g/L·h" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#FFF2CC;strokeColor=#D6B656;fontSize=12;fontStyle=0;arcSize=8;verticalAlign=middle;align=center;" vertex="1" parent="1">
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    <mxCell id="node8" value="结果③：SHH中丁醇15.7 g/L（+MV），得率0.24 g/g" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#FFF2CC;strokeColor=#D6B656;fontSize=12;fontStyle=0;arcSize=8;verticalAlign=middle;align=center;" vertex="1" parent="1">
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    <mxCell id="node9" value="结论：强化木糖转运与代谢可解除CCR，实现木质纤维素高效产丁醇" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#E1D5E7;strokeColor=#9673A6;fontSize=13;fontStyle=1;arcSize=8;verticalAlign=middle;align=center;" vertex="1" parent="1">
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