Ethylene Signaling in Plant Cell Death

Autar K. Mattoo and Avtar K. Handa

I. Introduction 125

II. Ethylene Biosynthesis Pathways 126

III. Temporal and Spatial Regulation of Ethylene

Biosynthesis 127

IV. Ethylene Signal Transduction Pathway 127 V. Ethylene Cross Talk with Other Plant Hormones 129

VI. Protease Involvement and Ethylene Biosynthesis in PCD 134

VII. Hormonal Regulation of Plant PCD 134

VIII. Perspective 136

Acknowledgments 137

References 137

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