English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The light-harvesting chlorophyll a/b-binding proteins of photosystem II (LHCII) are the major components of the photosynthetic machinery in plants which contain more than 60% of plant chlorophyll (Peter and Thornber 1991). LHCII has four related roles in plant photosynthesis i.e. collecting and transferring excitation energy to the reaction centers of photosystem II (PS II) and photosystem I (PS I) to promote photosynthetic electron transport (Ruban et al., 1999, Van Amerongen and Dekker, 2003), organization of the plant photosynthetic system by maintaining the tight appression of thylakoid membranes in chloroplast grana (Allen and Forsberg, 2001), distribution of excitation energy between PS II and PSI by reversible phosphorylation at its N-terminal side (Allen and Forsberg, 2001, Kargul and Barber 2008), and protection of photosynthetic system from excess energy under light saturated conditions (Horton et al 1996 and 2008). The LHCII proteins can be grouped into six subfamilies (LHCB1-6) which are encoded by LHC gene family (Jansson 1999). CP29, CP26 and CP24 are the minor proteins that are encoded by LHCB4, LHCB5 and LHCB6 genes, respectively. LHCB1, LHCB2 and LHCB3 are the major pigment-binding proteins which are encoded by LHCB1, LHCB2 and LHCB3 genes, respectively (Ruban et al 1999, Lucinski and Jackowski 2006). LHCB1, LHCB2 and LHCB3 polypeptides each with about 232 amino acid residues are similar in sequence, structure and function (Standfuss and Ku hlbrandt 2004). LHCB1-3 precursors are synthesized in cytoplasm and following transport into chloroplasts inserted into thylakoid membranes (Li et al., 2000). LHCB1 and LHCB2 are the most abundant proteins in the light harvesting antenna complex (Ruban et al., 1999). The N-terminal domain in both LHCB1 and LHCB2 lies on the stromal side where it is involved with adhesion of granal membranes and photo-regulated by reversible phosphorylation of its threonine residues (Boekema et al 1999, Anderson 2000). The composition and structure of LHCII complex is regulated by different factors. For example light intensity can change the amount of light-harvesting complex components (Anderson et al., 1986, Bailey et al., 2001). Meanwhile it has been reported that the expression of LHCB1 can be down regulated by accumulation of sugars such as glucose, sucrose and trehalose (Vinti et al., 2005, Aghdasi et al., 2009).

Functional Analysis of LHCB1 in Arabidopsis Growth, Development and Photosynthetic Capacity