Complex sentence: These proteins are activated during sprouting and the starch around the endosperm is converted to sugars, later the prolamins are broken down to provide the young seeds with a source of nitrogen and energy given "Triticeae" seedling a great boost during early life.
Split into simpler sentences: These proteins are activated during sprouting and the starch around the endosperm is converted to sugars. Later the prolamins are broken down to provide the young seeds with a source of nitrogen and energy giving the "Triticeae" seedling a great boost during early life.