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Cytokinins: A key player in determining differences in patterns of canopy senescence in Stay-Green and Fast Dry-Down sunflower (Helianthus annuus L.) hybrids
(Elsevier Science, 2017-05)
Leaf senescence during grain filling can reduce crop yield. We studied, under field conditions and during grain-filling, the association between leaf cytokinin levels and the onset of leaf senescence in sunflower hybrids ...
Senescence-Associated Vacuoles, a Specific Lytic Compartment for Degradation of Chloroplast Proteins?
(Molecular Diversity Preservation International, 2014-11)
Degradation of chloroplasts and chloroplast components is a distinctive feature of leaf senescence. In spite of its importance in the nutrient economy of plants, knowledge about the mechanism(s) involved in the breakdown ...
Senescence-Related Changes in the Leaf Apoplast
(Springer, 2013-11)
The extracellular space of leaves is a highly dynamic compartment harboring a number of activities involved in signal recognition, import/export of organic and inorganic compounds, and defense against pathogens. Although ...
Leaf protein allocation across the canopy and during senescence in earlier and later senescing maize hybrids, and implications for the use of chlorophyll as a proxy of leaf N
(Springer Heidelberg, 2019-08-01)
Leaf chlorophyll (chl) and protein distribution were analyzed throughout grain flling in four modern maize hybrids with contrasting senescence behavior, at three diferent canopy levels and at low-N (LN, 18 kg N ha−1) and ...
Leaf senescence and the profile of expanded leaf area in maize (Zea mays L.)
(University of Guelph, 2002-08)
Leaf senescence is a major factor affecting light interception and dry matter accumulation during the grain-filling period. Reduced leaf senescence has been associated with maize yield genetic improvement. The objectives ...
The changes of organelle ultrastructure and Ca2+ homeostasis in maize mesophyll cells during the process of drought-induced leaf senescence
(Pontificia Universidad Católica de Valparaíso, 2011)
Transcription factors associated with leaf senescence in crops
(MDPI, 2019-10)
Leaf senescence is a complex mechanism controlled by multiple genetic and environmental variables. Different crops present a delay in leaf senescence with an important impact on grain yield trough the maintenance of the ...
Sunflower Leaf Senescence: A Complex Genetic Process with Economic Impact on Crop Production
(IntechOpen, 2017)
Leaf senescence is a complex process controlled by multiple genetic and environmental variables. In different crops, a delay in leaf senescence has an important impact on grain yield trough the maintenance of the photosynthetic ...
Chloroplast protein degradation in senescing leaves: Proteases and lytic compartments
(Frontiers Media, 2019-06-19)
Leaf senescence is characterized by massive degradation of chloroplast proteins, yet the protease(s) involved is(are) not completely known. Increased expression and/or activities of serine, cysteine, aspartic, and ...